80 Percent Arms has recently launched their latest in 80% pistol frames with the new GST-9 Mod1 80 percent frame.

80 Percent Arms states “With two years of feedback from our customers, we made a few changes to our GST-9 frame to stay ahead of the competition.

First, we relocated the gas pedals forward, and re-contoured them to further optimize control over the frame through the recoil cycle, helping to drive the gun back to target faster and more efficiently.

We also re-contoured our modular grip attachment surfaces so that every grip option gives you a perfect fit, for the cleanest build possible.

Internally, we separated the rear-rail module to improve the builder’s experience, with users now only needing to line up one hole at a time, further simplifying the build process.”


  • Modular frame gives you the possibility of a 19, 19X, 19L, & 17 size weapon system in a single 4-in-1 platform
  • Compatible with Glock 19 3rd generation parts, holsters, & aftermarket accessories. GST-9 is the first and only 80% lower that is compatible with Glock holsters
  • Ergonomic features include an undercut trigger gaurd, high beavertail, glove bevel, scalloped mag release, no finger grooves, & newly redesigned gas pedals as standard
  • Premium internal rail components extended 3X, made of stainless steel, with multiple coating options

To learn more about 80 Percent Arms. CLICK HERE

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