Embarking on the journey of assembling a Polymer 80 “Buy, Build, Shoot” kit can feel like stepping into uncharted territory. The allure of crafting your own firearm is undeniably strong, but the process demands meticulous attention to detail and a thorough understanding of the components involved. This isn’t a task for the faint of heart; however, with the right guidance and a healthy dose of patience, transforming a collection of parts into a functioning firearm is an achievable goal. This comprehensive guide will walk you through each critical step, from preparing the frame to final assembly and function testing. We’ll explore the essential tools required, delve into the intricacies of each component, and provide invaluable tips to ensure a seamless and successful build. Whether you’re a seasoned gunsmith seeking a new challenge or a novice eager to learn the ropes, this guide will empower you to navigate the complexities of Polymer 80 assembly and create a firearm tailored to your specifications. Prepare to delve into the world of DIY firearm construction and unlock the satisfaction of building your own Polymer 80.
First and foremost, before even touching the frame, gather your essential tools. This includes a drill press, a Dremel tool with various sanding and cutting attachments, files, sandpaper of varying grits, a vice, punches, and a hammer. Additionally, having a proper workspace with adequate lighting is crucial. Now, let’s talk about the frame itself. The Polymer 80 frame arrives as an unfinished piece, requiring careful milling and drilling to accommodate the internal components. This is where precision becomes paramount. Use the provided jig and instructions meticulously, ensuring accurate alignment and depth for each cut. Furthermore, take your time and avoid rushing the process, as mistakes at this stage can be detrimental to the final product. Once the milling and drilling are complete, move on to finishing the frame. This involves sanding and polishing the frame to remove any imperfections and ensure a smooth, comfortable grip. Subsequently, you’ll begin installing the lower parts kit, starting with the trigger group and moving on to the magazine release, slide lock, and other components. Each piece requires careful fitting and securing, so refer to the provided diagrams and instructions for proper placement and orientation. Remember, patience and attention to detail are key to a successful build.
After the lower receiver is complete, the next step is installing the slide and barrel assembly. Carefully align the slide rails with the frame and ensure smooth reciprocation. Next, install the recoil spring and guide rod, making sure they are properly seated. Furthermore, pay close attention to the barrel installation, verifying correct fitment and lockup within the slide. Once the slide assembly is complete, it’s time to function test the firearm. Before loading any live ammunition, conduct a thorough safety check to ensure all components are correctly installed and functioning properly. First, dry fire the pistol several times to check the trigger mechanism and slide cycling. Subsequently, inspect the magazine for proper insertion and release. Finally, with proper safety precautions in place and at a designated shooting range, test fire the firearm with live ammunition. Observe for any malfunctions or issues, and address them promptly. Building a Polymer 80 is a rewarding experience, but remember safety and responsible gun ownership are paramount throughout the entire process. By following these detailed instructions and adhering to safe gun handling practices, you can successfully build a functional and reliable firearm.
Gathering Your Tools and Materials for Polymer 80 Assembly
Alright, so you’re ready to dive into the world of Polymer 80 builds. That’s awesome! Before you even think about touching that frame, you’ve got to make sure you have everything you need laid out and ready to go. Trust me, nothing’s worse than getting halfway through and realizing you’re missing a crucial tool or part. This prep work is key to a smooth and successful build.
First off, let’s talk about the Polymer 80 kit itself. Make sure you have all the components included – the frame, jig, drill bits, and all the necessary hardware. Double-check everything against the parts list that came with your kit. It’s easy to overlook something small, and you don’t want to be caught off guard.
Next up are the tools. This is where things can get a little specific. You’ll absolutely need a drill press, and a hand drill can work in a pinch, but a drill press provides much more stability and control, leading to cleaner holes and a more professional finish. You’ll also need a set of drill bits that match the specifications outlined in your Polymer 80 instructions. Don’t substitute – use the right bits for the job. A Dremel or rotary tool is invaluable for finishing touches and removing excess material. It’s like the sculptor’s chisel for your frame. A vise or clamping system will securely hold your frame during drilling and other operations, preventing slips and ensuring accuracy. Finally, having a set of punches, both roll pin punches and standard punches, will make installing the pins a breeze. Some kits include these, but it’s good to have a decent set on hand just in case.
Beyond the essential tools, there are a few other items that will make your life easier. A good workbench or a stable, well-lit area is essential. Safety glasses are a must-have – protect your eyes from flying debris. Having a small hammer and some pliers can be handy for minor adjustments. A set of files and sandpaper will help you refine the finish and ensure a perfect fit for your components. And finally, a little bit of lubricant can help smooth things out during assembly.
To make it super clear, let’s put it all together in a handy table:
| Essential Tools and Materials | Optional but Recommended |
|---|---|
| Polymer 80 Kit (frame, jig, hardware, etc.) | Workbench/Well-lit area |
| Drill Press (hand drill as a last resort) | Safety Glasses |
| Drill Bit Set (as specified by the instructions) | Hammer |
| Dremel/Rotary Tool | Pliers |
| Vise/Clamping System | Files and Sandpaper |
| Punch Set (roll pin and standard) | Lubricant |
Having all these tools and materials gathered beforehand will make the assembly process much smoother and more enjoyable. So, take the time to prepare properly, and you’ll be well on your way to a successful Polymer 80 build.
Preparing the Polymer 80 Frame
Now that you’ve gathered all your tools and materials, it’s time to start working on the Polymer 80 frame itself. This stage involves some careful prep work to ensure everything aligns correctly and functions smoothly down the line.
Preparing the Polymer 80 Frame for Build
Getting your Polymer 80 frame ready for assembly is a crucial first step. This process involves removing excess material, prepping holes, and generally ensuring a smooth foundation for your build. Doing this right will prevent headaches down the line and ensure your finished firearm functions reliably.
Removing Excess Material
Your Polymer 80 frame arrives with some extra bits of polymer that need to be removed. These are usually found around the jig holes and along certain channels. The manufacturer provides a drill bit and end mill specifically for this purpose. Carefully follow the instructions provided with your kit, using the correct tools and techniques. Rushing this step or using improper tools can damage the frame, so take your time and double-check your work.
Drilling and Milling: A Detailed Guide
Before you start, ensure your workspace is well-lit and organized. Having the right tools within easy reach will make the process smoother and safer. Safety glasses are a must – you’ll be creating plastic dust, and you don’t want any of that in your eyes. A dust mask is also highly recommended. The Polymer 80 frame comes with a jig that guides your drill and end mill, ensuring accurate material removal. Secure the frame firmly in the jig according to the instructions. This usually involves screws and careful alignment. Double-check the jig placement before proceeding – a misaligned jig can lead to irreparable damage to the frame. Now, using the provided drill bit, carefully drill out the marked holes. Don’t apply too much pressure – let the drill do the work. Forcing it can lead to slippage and damage. Once all the holes are drilled, switch to the end mill. Again, follow the instructions carefully, paying close attention to the depth and direction of the milling. Move the end mill slowly and steadily, ensuring a clean and even cut. Periodically remove the frame from the jig and test fit the components. This allows you to check your progress and make any necessary adjustments. Removing too much material can compromise the frame’s integrity, so err on the side of caution. Once you’ve removed all the necessary material, use a file or sandpaper to smooth out any rough edges or burrs. This ensures a perfect fit for the internal components and contributes to the overall quality of your build. This process might seem daunting at first, but with patience and attention to detail, it’s entirely manageable. Remember, taking your time and following the instructions will result in a properly prepared frame and a successful build.
Prepping the Holes
After removing the excess material, you’ll need to prep the holes for the pins and other components. This typically involves using a reamer or other tools to ensure the holes are the correct size and shape. Again, consult your instructions for the specific tools and techniques recommended by the manufacturer.
Essential Tools and Materials
Having the right tools and materials at hand will make the preparation process significantly smoother. Here’s a breakdown of some essentials:
| Item | Description |
|---|---|
| Drill Press (Recommended) | Provides stability and control for accurate drilling. A hand drill can be used, but extra caution is required. |
| Drill Bits (Provided) | Used for creating the initial holes in the frame. |
| End Mill (Provided) | Used for removing larger sections of material and shaping the frame. |
| Files and Sandpaper | Used for smoothing out rough edges and ensuring a perfect fit for components. |
| Safety Glasses | Essential for protecting your eyes from flying debris. |
| Dust Mask | Recommended for protecting your lungs from plastic dust. |
| Polymer 80 Jig | Crucial for ensuring accurate drilling and milling. |
| Work Light | Provides adequate illumination for precise work. |
Gathering these tools and materials beforehand will help ensure a smooth and efficient build process.
Completing the Trigger Housing Installation
With the rear rail module successfully installed, we’re ready to tackle the trigger housing. This is a critical component, so take your time and ensure everything fits snugly and securely. Remember, proper installation is key for both functionality and safety.
Fitting the Trigger Housing
Begin by carefully aligning the trigger housing with the corresponding slot within the receiver. You’ll notice a small cutout at the front of the trigger housing; this should align with a small tab inside the receiver. Gently guide the housing into place, ensuring it sits flush against the rear rail module. Avoid forcing it; if you encounter resistance, double-check the alignment. A slight wiggle might be necessary to get everything seated correctly.
Securing the Trigger Housing
Now for the crucial part: securing the trigger housing. This involves installing the locking block pin, a small metal pin that holds everything together. Locate the hole designated for the locking block pin on the side of the receiver. It’s usually just above and slightly behind the trigger guard area. Take your locking block pin and carefully insert it into the hole. You might need a small punch and a hammer or a specialized polymer80 tool to gently tap it into place. Ensure the pin goes in straight and sits flush on both sides of the receiver. Over-torquing or hammering too hard can damage the receiver or the pin, so apply steady, even pressure. Once the pin is fully seated, give it a gentle wiggle to confirm it’s secure.
A crucial step often overlooked is checking for proper locking block engagement. With the pin installed, manipulate the trigger to ensure the locking block moves freely and interacts correctly with the slide rails. If the trigger feels stiff or gritty, or if the locking block doesn’t move smoothly, you may need to re-evaluate the pin installation and ensure everything is aligned correctly. A properly installed locking block is essential for safe and reliable firearm operation. Remember, if you’re unsure about any step, consult the manufacturer’s instructions or seek guidance from a qualified gunsmith.
Here’s a handy table summarizing the tools you might need:
| Tool | Purpose |
|---|---|
| Polymer Punch Set | For gently tapping pins without marring the polymer |
| Small Hammer or Mallet | Used with the punch set for controlled force |
| Locking Block Pin | The essential pin that secures the trigger housing |
| Manufacturer’s Instructions | Your primary guide for proper assembly |
With the trigger housing securely in place, we’re one step closer to completing your build. Remember to double-check your work and consult the manufacturer’s instructions if needed. Safety and proper function are paramount.
Testing the Trigger
With the trigger housing secured, it’s time to test its functionality. Before installing any other components, carefully check the trigger’s movement. It should move smoothly and reset properly. If you feel any resistance or sticking, re-examine the locking block pin installation to ensure it’s correctly seated and the locking block moves freely.
Adding the Recoil Spring Assembly
The recoil spring assembly is a crucial component of your Polymer 80 build, responsible for absorbing the energy of the fired round and returning the slide to its original position. Proper installation is essential for reliable cycling and accuracy.
Preparing the Recoil Spring Assembly
Before installing the assembly, ensure you have all the necessary components. This typically includes the recoil spring guide rod, the recoil spring, and any associated washers or caps. Some aftermarket recoil spring assemblies might have slightly different configurations, so consult the manufacturer’s instructions if needed. It’s a good idea to lightly lubricate the recoil spring guide rod and the inside of the recoil spring with a suitable gun oil. This will minimize friction and ensure smooth operation.
Installing the Recoil Spring Assembly
Begin by inserting the recoil spring guide rod into the channel at the rear of the slide. Make sure the end with the smaller diameter, or the end designed to interface with the barrel, is facing forward. Next, slide the recoil spring over the guide rod, ensuring the tighter coils are towards the front. The end of the spring with the wider diameter will butt against the rear of the slide.
Most Polymer 80 frames have a small lip or recess within the channel at the rear of the slide, specifically designed to retain the end of the recoil spring. Ensure the end of the recoil spring is seated correctly against this lip or within this recess. This proper seating is vital for correct function. If you encounter any resistance, double-check the orientation of the spring and guide rod. A small amount of pressure may be needed to fully seat the spring.
Once the spring and guide rod are in place, visually inspect the assembly to ensure everything sits flush and securely. You should be able to gently compress the spring and feel resistance. If the spring feels loose or wobbly, recheck the installation steps. A properly installed recoil spring assembly will remain firmly in place and provide the necessary force for reliable slide cycling.
Pay close attention to the following table for specific details concerning your particular recoil spring assembly:
| Component | Description | Installation Notes |
|---|---|---|
| Recoil Spring Guide Rod | Typically a metal rod that guides the recoil spring. | Smaller diameter end faces forward. Ensure smooth and unobstructed movement within the slide channel. |
| Recoil Spring | A coiled spring that absorbs recoil energy. | Tighter coils face forward. Larger diameter end seats against the rear of the slide. Ensure proper seating against the retaining lip or recess. |
| Washers/Caps (if applicable) | Some assemblies may include additional components. | Refer to the manufacturer’s instructions for the correct placement and orientation. |
With the recoil spring assembly correctly installed, you are one step closer to completing your Polymer 80 build. Remember to consult the full build guide for subsequent assembly steps and always prioritize safety throughout the process.
Completing the Frame Completion Steps (Drilling and Finishing)
Drilling the Frame
Alright, so you’ve got your Polymer 80 frame and it’s looking pretty good. But it’s not quite ready for prime time yet. It’s time to break out the drill and make some magic happen. Now, this part is crucial, so listen up. Accuracy is key here. If you’re not comfortable using power tools, consider finding a qualified gunsmith to handle this step. Trust me, it’s better to be safe than sorry.
Your Polymer 80 kit should come with a jig and drill bits specifically designed for this process. Use them! Don’t try to wing it with random tools. The jig acts as a guide, ensuring you drill the holes in the correct locations and at the correct depths. Before you start drilling, double-check the jig’s alignment. A small misalignment can lead to big problems later on. Secure the frame firmly in the jig, ensuring it won’t move during drilling.
Drilling Tips for a Clean Finish
Start with the smaller drill bits and gradually work your way up to the larger ones. This will prevent cracking or chipping the polymer. Use a lubricant like cutting oil to reduce friction and heat buildup. Don’t apply too much pressure. Let the drill do the work. Take your time and be patient. Rushing this process can lead to mistakes. Regularly clear out any polymer shavings from the drill bit to prevent clogging.
| Drill Bit Size | Purpose |
|---|---|
| Small Bit (e.g., 1/8") | Pilot hole, guides larger bits |
| Medium Bit | Enlarges the hole, creates more clearance |
| Large Bit (final size) | Completes the hole to the required specifications |
Finishing Touches
Once you’ve finished drilling, it’s time for the finishing touches. This involves removing any excess polymer material and smoothing out the drilled areas. Your kit likely includes some tools for this purpose, like files and sandpaper. Use a file to carefully remove any large burrs or rough edges around the drilled holes. Then, use progressively finer grits of sandpaper to smooth out the surface. Start with a coarser grit (around 100-150) to remove any remaining imperfections, and gradually move to finer grits (220-400) for a polished finish. Take your time and be meticulous. A smooth, even finish not only looks good but also ensures proper functionality of your firearm.
Remember, building a Polymer 80 requires patience and attention to detail. Following these steps carefully will help you achieve a professional-looking and functional firearm. Again, if you are unsure about any of these steps, consult a qualified gunsmith.
Test Fitting and Final Inspection
Before you declare victory, it’s crucial to test fit all your components. This is where you make sure everything lines up correctly and functions smoothly. Insert the rails, trigger group, and other internal parts. Check for any binding or resistance. If anything feels off, don’t force it. Go back and check your work. Once you’re satisfied with the fit, give the frame one final inspection. Look for any remaining imperfections or areas that need further attention. Address any issues before moving on to the final assembly. Now, you’re ready to put it all together and enjoy your completed Polymer 80 build.
Assembling a Polymer 80 Build
Assembling a Polymer 80 “Buy, Build, Shoot” (BBS) pistol requires careful attention to detail and a thorough understanding of the process. While these kits offer a pathway to firearm ownership, it’s crucial to acknowledge the legal and safety implications involved. Before beginning, ensure you are compliant with all local, state, and federal laws regarding firearm construction and ownership. This includes understanding regulations related to unserialized firearms and background checks, which vary by jurisdiction. Improper assembly can lead to malfunction and potential injury, so meticulous work and strict adherence to instructions are paramount. Utilizing proper tools, including jigs and specialized bits, is essential for achieving a safe and functional build. It’s highly recommended to consult reputable resources, such as detailed video tutorials and online forums dedicated to Polymer 80 builds, for step-by-step guidance.
Beyond the mechanical aspects, responsible firearm ownership involves a commitment to safe storage and handling practices. Familiarize yourself with the four fundamental rules of gun safety and take a firearms safety course from a certified instructor. Building a firearm is a significant undertaking, requiring both technical skill and a deep understanding of the responsibilities that come with owning a firearm.
People Also Ask About Polymer 80 Builds
Is it legal to build a Polymer 80?
The legality of building a Polymer 80 pistol kit varies significantly depending on your location. Federal law generally allows individuals to build firearms for personal use, but state and local laws can impose restrictions or outright bans. Some jurisdictions require background checks, serialization, or registration of self-built firearms. It is crucial to research and understand the specific laws in your area before purchasing or assembling a Polymer 80 kit. The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) provides resources and information on federal firearms regulations.
What tools do I need to build a Polymer 80?
Essential Tools:
A Polymer 80 jig and the correct drill bits are essential. You’ll also need a drill press or hand drill (with a drill press vice for stability), files, sandpaper, and a punch set for pin installation. A vise block can be helpful for securing the frame during various stages of the build.
Recommended Additional Tools:
While not strictly necessary, tools like a Dremel rotary tool with sanding and polishing attachments can assist with finishing and detail work. A heat gun can be useful for minor adjustments to the polymer frame. A torque wrench can ensure proper tightness of screws and components. A comprehensive tool kit designed specifically for Polymer 80 builds is often a worthwhile investment.
Where can I find instructions for assembling a Polymer 80?
Numerous resources are available online, including video tutorials on platforms like YouTube and detailed guides on firearm forums. However, it’s crucial to ensure the information you’re following comes from reputable sources known for their accuracy and adherence to safe gunsmithing practices. Cross-referencing information from multiple sources can help ensure a complete understanding of the assembly process.
What are the potential risks of improperly assembling a Polymer 80?
Improper assembly can lead to a variety of issues, including malfunctions, jams, and even catastrophic failures that could result in serious injury or death. Incorrectly drilled holes, poorly fitted parts, or improperly installed components can compromise the structural integrity and functionality of the firearm. It’s critical to take your time, double-check your work, and seek expert advice if you encounter any difficulties during the build process.