BUILD AT HOME
80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states.
INCREDIBLY PRECISE
We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum.
RIDICULOUSLY EASY
We also offer our patented AR-15 and .308 Easy Jigs® which is the first 80% lower jig that makes it ridiculously easy for a non-machinist to finish their 80% lower in under 1 hour with no drill press required.
100% SATISFACTION GUARANTEED
Products manufactured by 80% Arms carry a lifetime warranty against manufacturing defects. We will promptly replace or repair any product that we determine to be defective.
SIG
P365 Grip Modules for Your Custom SIG Build
Looking to upgrade your SIG P365? Our P365 grip modules give you the edge in both performance and comfort. Whether you’re building a concealed carry pistol or dialing in a custom setup, our P365 and P365 modular grip options offer precision fitment, better ergonomics, and enhanced recoil control.
Built for Performance, Designed for Control
Crafted with premium materials and made for builders who don’t settle for stock, these grip modules are compatible with all SIG P365 fire control units—including the P365, P365X, and P365XL. Each P365 modular grip is designed to maximize control, reduce printing, and give you a more confident draw every time.
Why Choose Our P365 Modular Grips?
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Drop-in ready, no gunsmithing required
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Compatible with OEM and aftermarket slides
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Textured for superior grip under stress
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Optimized for both standard and extended mags
Upgrade Your Build with 80 Percent Arms
Whether you’re swapping frames or starting your first modular build, 80 Percent Arms has you covered with top-tier P365 grip modules. Shop now and take your SIG to the next level.