We received permission from the Federal Court to sell this item. State Restrictions apply. READ MORE.
First released in November 2019, the GST-9 V1 set a precedent for the 80% frame market. It provided a modular grip system while maintaining Gen 3 G19 parts compatibility. With 3 years of customer feedback and thousands of rounds down range, we’ve raised the bar again with the new GST-9 MOD1 frame!
The gas pedal shape and location were revised and re-contoured for optimized controls during the recoil cycle. The grip system was redesigned to guarantee a flush fit with grip modules when building out your frame. Last but not least, the rear rails were split into a 2-piece system to greatly help streamline the assembly 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 Gen 3 parts, holsters, & aftermarket accessories.
Ergonomic: undercut trigger guard, high beavertail, glove bevel, scalloped mag release, no finger grooves, & gas pedals for your support hand as standard.
Premium internal rail components extended 3X OEM length, made of stainless steel.
- Flared magwell: large built-in flared magwell ensures fast magazine changes and eliminates the need to buy expensive add-on magwells.
Easily ships to your door & completes in minutes.
Calibers: can be built out to support 9mm (G19) /.40cal (G23) /.357 Sig (G32).
*Please Note: The GST-9 MOD1 is fully compatible with Glock 19 Gen 3 internal parts and slides. See all possible build combinations here. Please refer to the instructional guide for assembly tips. Visit our FAQ for common questions and troubleshooting tips.
**MOD1 frames are fully compatible with Glock 19, Glock 19L, & Glock 19XL slides. Glock 17 slides are not supported.
80 Percent Arms strives to provide the highest level of customer service within the 80% and firearm industry as a whole. We support all of our products with a lifetime warranty* so you can build with confidence.
Due to ATF regulations, we cannot legally include the jig or frame rails with the MOD1 frame. The jig and MOD1 frame must be purchased on our website as two separate items. Each jig includes one set of MOD1 frame rails. You will need to purchase one jig for every MOD1 frame you plan to build. Frame rails are ONLY included with the jig, not with the 80% lower itself.
You can always expect prompt and educational information as customer satisfaction is our bread and butter. For any questions or concerns regarding our products, please contact us at either firstname.lastname@example.org, (949) 354-2767 or message us via our live chat!
For more help and tips, be sure to check out our instructional videos on Odysee.
This item is restricted from shipping to California, Connecticut, New Jersey, New York, Washington D.C, Washington, Hawaii, Colorado, City of Philadelphia Pennsylvania, Maryland, Illinois, and Rhode Island