80 Percent Arms GST-9: a Modular Polymer 80% Pistol

80% Arms has released what they describe as the “…world’s first modular polymer 80% pistol.” It’s the GST-9, engineered from the inside out, they say, to improve upon the original Glock design.

As they describe the GST-9 pistol kit, “[it] contains everything needed to build a top-tier handgun at a production level price. The GST-9 capitalizes on all the strengths of the Generation 1-3 Glock platform, while also incorporating the most popular aftermarket upgrades as standard features.”

80 Percent Arms GST-9
80% Arms says their “80 lower” (or 80% lower, however you prefer) is: “…[F]ast on target, designed…to give you a natural point-of-aim, and be comfortable in the hand. An RMR gives a fast acquisition, but nothing beats a gun that has a natural point. And with less muzzle-flip, you can be sure to get the gun back on target quicker than ever.”
The GST-9 offers multiple grip modules for both a standard and a full-si

ze frame intended to attach quickly to the contoured frame for improved ergonomics. Flared magwells are present to reduce reload time. The GST rails, which are nickel-coated, are three-times original OEM length. This is intended to provide tight tolerances and reduced recoil for more repeatedly precise shooting.

80 Percent Arms pistol build
Heads up: 80% Arms advises you’ll need a new jig with each frame: the rails come with the jig, not the frame.

Their Operations Manager, strangely identified only as “Jeff P.”, advises,

“Customers will be able to go from opening the mail to a competition or defense ready pistol in under 15 minutes.” Due to recent ATF regulations, the jig and frame rails for the GST-9 must be purchased separately from the GST-9 80% lower. Each jig includes one set of GST-9 frame rails. Frame rails are included with the jig, not with the 80% lower itself.”

80% Arms in FDE

Sheehan H., the equally mysterious Senior Design Engineer, says,

“We spent two years studying customer feedback to determine what features were missing among the different options in the market. We incorporated what we found and gave customers the option to choose how to build each frame.”

The GTS-9 fits several reputable holsters.

Features include:

  • Extended Internal Rails
  • Exaggerated Gas Pedal Cuts
  • Nickel Mating Surfaces
  • Trigger Guard Undercut
  • Compatible With Glock® Parts
  • Full 1913 Picatinny Rail
  • Modular frame w/ Interchangeable Grip Sizing & Magwells

Find out more online at 80 Percent Arms.

Shooting the GST-9 from 80 Percent Arms

Brock Trautman is the senior news anchor for The Mag Life, the official publication of GunMag Warehouse. He's also a cartoon, so...don't get butt-hurt about anything he says. He's not making subjective judgments on things, or reviewing anything - he's just passing along the news.

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