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FST-1 Router Troubleshooting Guide

80 Percent Arms | Oct 20th 2026

80% Arms • Router support If your new FST-1 router will not start or briefly spins and stops, the carbon brushes may be the cause. New brushes can sometimes need reseating and a short break-in...
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GST-9 MOD100: LOWER-FRAME ASSEMBLY

GST-9 MOD100: LOWER-FRAME ASSEMBLY

80 Percent Arms | Oct 7th 2026

GST-9 MOD100 | LOWER-FRAME ASSEMBLY The GST-9 MOD100 uses a familiar Gen 3-style lower-parts layout, but there are a few important differences to keep in mind. Most notably, the GST-9 uses separate...
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FST-1 Router Troubleshooting Guide

GST-9 MOD100: LOWER-FRAME ASSEMBLY

NFA Deregulation Explained: What Gun Owners Need to Know

Effective Concealed Carry Basics: Build the Complete Setup

Virginia’s homebuilt firearm community is officially on the clock.

Minnesota’s “Ghost Gun” Crackdown Is Really an Attack on Lawful Builders
!