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FAB Defense built its name supplying gear to military and law enforcement units overseas, and this kit is a good snapshot of why. Instead of piecing together a stock, grip, foregrip, sights, and spare mag from five different brands, this bundle gives you a matched set of black polymer components designed to work together on any Mil-Spec or Commercial AR-15/M4 platform. It's a solid pick for a first-time build, a patrol rifle refresh, or just replacing tired factory parts all at once.
The GL-Core M Stock with Gradus Grip Sets the Tone The centerpiece of this kit is the GL-Core M buttstock, which hides an integrated magazine carrier right in the body of the stock. The idea came from a real problem: rifle-carrying officers often have plenty of spare pistol mags on their belt but nothing for the rifle itself. This stock solves that by keeping a spare mag within arm's reach, without adding a mag pouch or extra gear to your kit. It ships with ambidextrous QD sling swivel sockets and an interchangeable buffer tube adapter, so it locks in tight whether you're running a Mil-Spec or Commercial tube. Paired with it is the Gradus grip, a rubberized, 15-degree reduced angle grip that keeps your wrist in a more neutral position during long range sessions or fast-paced CQB work.
PTK VTS-M Foregrip and FRBS Sights Round Out the Rifle Up front, the PTK VTS-M combo gives you an angled pointing foregrip paired with a thumb-stop support, both built for M-LOK handguards. The pointing grip encourages a more natural, instinctive shooting posture, while the thumb lock keeps your hand from sliding during rapid strings of fire. On top of the rail, the FRBS front and rear flip-up sight set rounds things out as a genuine backup sighting option if your optic ever fails or runs out of battery. Both sights fold flat when not needed and pop up instantly with a spring-loaded mechanism, with tool-free windage and elevation adjustments built in.
Every component in this kit is finished in matte black, so it blends together visually as well as it works together mechanically. Toss in the included 30-round Ultimag polymer magazine and you've got a functional loadout straight out of the box, not just a pile of separate accessories.
Yes, the GL-Core M stock comes with an interchangeable buffer tube adapter, so it locks in securely on both Mil-Spec and Commercial tubes. You just swap the adapter to match whichever tube your rifle already has.
Yes, the GL-Core M has a built-in magazine carrier sized for a standard AR-15 magazine. It was originally designed for officers who carry a rifle but don't always have a spare mag on hand, so it keeps a reload within reach without adding a pouch to your gear.
The PTK VTS-M combo is built for M-LOK handguards, so you'll want to check that your rail uses M-LOK slots before installing it. It mounts without any adapters as long as the M-LOK compatibility checks out.
They can be used as a primary sight, but most people run them as a backup behind a red dot or scope. They fold down flat when not in use and pop up quickly if your optic ever goes down, giving you a reliable fallback.
| UPC | 7290111588419 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | FXAR15KITB |
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