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If you're building a custom Glock 19 Gen 3, the FMK AG1 gives you a solid foundation without forcing you to source every part separately. This is a fully assembled frame made from reinforced polymer, ready to drop in your preferred lower parts kit. Unlike some competitors, you're getting a frame that's 100 percent complete out of the box, meaning the rails, pins holes, and internal geometry are already finished and tested.
The grip texturing on this frame is where you'll notice the difference most. It's aggressive enough to give you a firm purchase when you're running drills or dealing with moisture, but it stops short of being uncomfortable during extended shooting sessions. The undercut trigger guard sits high, letting you get a higher grip on the frame for better recoil control. It maintains the exact same grip angle as an original Glock 19, so if you've run G19s before, this will feel instantly familiar.
You'll need a lower parts kit to complete the build, but that gives you flexibility. Grab OEM Glock parts if you want pure reliability, or explore the aftermarket options that match your preferences. The frame accepts all standard Gen 3 G19 components with no fitting required. Holster compatibility is straightforward too, since it matches G19 dimensions and works with virtually any standard G19 holster on the market.
The AG1 comes complete as a frame with the locking block, but you'll need a lower parts kit to finish it. A G19 Gen 3 compatible lower parts kit includes the trigger assembly, firing pin, springs, pins, and magazine catch. You'll also need a slide and barrel to complete the pistol. All standard Gen 3 Glock components work with this frame.
Yes, the AG1 maintains the exact dimensions of a Gen 3 Glock 19, so it works with standard G19 holsters. You won't have fitment issues with any typical duty, carry, or range holster designed for a G19.
The texture is aggressive but not abrasive. It gives you a secure hold without tearing up your hands during long range sessions. Combined with the undercut trigger guard, it promotes a high grip position for better control over felt recoil.
Yes, FMK Firearms manufactures the AG1 frame in California. The company uses reinforced polymer and quality control testing to ensure durability and reliability across their products.
| UPC | 850979006431 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | FMKGAG1BB |
| Product Type | Frame |
| Model | |
| Color | Black |
| Caliber/Gauge | 9mm |
| Action |
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