Polymer80Deals Patriot Pack: Build the AR-15, AR-9, and AR-10. One Kit.

Stop deciding and start building. The Patriot Pack from Polymer80Deals gives you the foundation for the three most essential AR platforms in one shot. This isn’t a random bundle; it’s a strategic toolkit for any serious builder. You get a forged AR-15 lower, a dedicated 9mm Glock-mag lower, and a robust .308 lower. Cover your bases for a duty rifle, a compact carbine, and a long-range hammer without hunting for separate deals.

We spec these out like we’re building them ourselves. The AR-15 lower is forged 7075-T6, 100% mil-spec, with a broached magwell. It’s the standard for a reason. The 9mm billet lower is built for function, with a heavy-duty trigger guard, a threaded bolt catch pin, and compatibility with Glock® OEM and ETS mags—no adapters, just a clean, reliable feed. The .308 billet lower is machined from 7075-T6 aluminum with a reinforced trigger guard to handle the larger platform’s stress.

This is for the builder who doesn’t want to be limited. One day you’re finishing a 5.56 build, the next you’re configuring a 9mm for the range, and later you’re piecing together a .308 for precision. With this pack, the lower—the serialized part you’d normally wait on—is already in your safe. You control the timeline, the configuration, and the final product, from start to finish.

The Bottom Line: This bundle saves you money over buying individually and saves you the hassle of future “what ifs.” All three receivers are made right here in the USA. You need tools and a jig to complete them—this is for the DIY builder, period. If you know, you know.