Key Features

Polymer80 80 Lower Jigs feature precision-machined templates for accurate cuts, drill holes, and milling on polymer or aluminum receivers. Kits include drill bits, end mills, and step-by-step instructions for professional results in under an hour.
Versatile designs support multiple calibers and platforms, from Glock-compatible pistols to full AR rifles, with durable steel or aluminum construction for repeated use.
Built-in alignment guides minimize errors, making them ideal for beginners and experienced builders alike.

Top Benefits

• Unmatched Precision: Perfect alignment ensures reliable firearm operation every time.

• Major Cost Savings: Eliminate gunsmith fees and customize without markups; jigs pay for themselves after one build.

• Built to Last: Heavy-duty materials handle multiple projects with ease.

• Easy to Use: Complete kits require no special tools or skills for quick setups.

Why Polymer80 Jigs Excel

As industry leaders, Polymer80 Inc crafts jigs optimized for their popular frames yet fully compatible with mil-spec lowers. Affordable bundles start at $75-80, including lowers and bits for AR-9, pistol, or rifle projects.
Reinforced high-stress areas deliver dependable performance for serious builders.

Start Your Build Today

Order your 80 Lower Jig from Polymer80 Inc now and unlock custom firearm potential. Enjoy fast shipping, expert support, and everything needed for compliant, high-quality home builds.