Polymer80 Build Kits — Everything in One BoxOur curated build kits include the 80% frame with jig, complete slide assembly, and lower parts kit. Matched for compatibility by Marcus Webb, our lead gunsmith with 100+ P80 builds completed. Each kit ships with our illustrated build guide — written from hands-on experience, not copied from forums.Choose your frame size: Compact (Glock 19), Full-Size (Glock 17), or .45 ACP (Glock 21). About our build team →