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The FAB Defense M4 buttstock swaps out the factory furniture on your Remington 870 for a pistol grip and collapsible stock combo that feels a lot more like an AR-15 than a traditional shotgun. It's a one-piece adapter design, so there's no separate hardware kit to fumble with, just a textured grip and stock that mount straight to the receiver. FAB Defense has been building tactical equipment for military and police units out of Israel since the late 1960s, and this stock carries that same no-frills, built-for-use mentality.
The pistol grip itself is molded from reinforced composite material with a non-slip texture that stays put even with sweaty or gloved hands. It's angled slightly to help counter muzzle rise on recoil, which makes a real difference on faster follow-up shots. Tucked inside the grip is a small storage compartment, handy for a spare battery for your light or optic, or a mini cleaning kit you don't want to leave in the truck.
The buttstock rides on a 6-position M4-pattern tube that works with MIL-SPEC or commercial buffer tubes, giving you several length of pull settings instead of being stuck with one fixed size. Fully extended it lands around 13.6 inches of length of pull, which is a comfortable middle ground for most builds and lets you dial things in for different shooters or for running the gun with a plate carrier on. Installation is a drop-in job with no gunsmithing needed, though it's worth having the right screw on hand before you start since not every kit ships with one.
Once it's on, this stock opens the door to more upgrades down the line. FAB Defense builds this same AGR-870 platform to accept an aluminum M4 buffer tube or their GL-Core buttstock if you decide you want something different later, and there's also a version with a built-in shock absorber if felt recoil is a bigger concern for you than a straightforward stock swap.
This stock is built for 12-gauge Remington 870 models and uses a drop-in adapter that mounts directly to the receiver. It's designed to work across the 870 lineup, though it's always smart to double check your exact model before ordering. No gunsmithing or permanent modification is needed to install it.
Installation is a straightforward drop-in process and most owners handle it at home with basic hand tools. You'll be removing your factory stock and grip and mounting this one in its place. Just make sure you have the correct length screw on hand, since it's not always included with the kit.
The buttstock runs on a 6-position M4 pattern tube, giving you several length of pull settings to work with instead of one fixed length. Fully extended it comes in around 13.6 inches, which is a solid all-around length for most shooters. This makes it easier to get a comfortable fit whether you're shooting in a t-shirt or running gear with a plate carrier.
Yes, this is built on the same AGR-870 platform that FAB Defense uses across their Remington 870 stock lineup. That means you can swap in an aluminum M4 buffer tube or their GL-Core buttstock down the road, or step up to a version with a built-in shock absorber if you want more recoil reduction. It gives you room to grow into the setup instead of having to start over.
| UPC | 7290105940780 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | FXAGR870FK |
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