FAB Defense GLR-16 Matte Black Synthetic Fixed Storage Compartment & Anti-Rattle Mechanism for M4/AR-PlatformF.A.B. Defense$77.20
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F.A.B. Defense
The FAB Defense GLR-16 adjustable cheekrest stock transforms your AR-15 or M4 platform rifle with a modular, shooter-centric design that works with both Mil-Spec and Commercial diameter buffer tubes. Built in matte black synthetic, this buttstock combines ergonomic features—including a contoured rubber butt pad and height-adjustable cheek rest—with practical mission-oriented attachments. Whether you're running a red dot, prism scope, or magnified optic, the GLR-16's cheek rest lets you dial in consistent sight picture and head-to-gun geometry without shimming or improvisation.
The stock's sling integration is comprehensive: you get three fixed slots (front and rear positions) plus two ambidextrous QD sling swivel sockets, giving you flexibility to run bungee, two-point, or dedicated QD attachments. The anti-rattle mechanism keeps your setup quiet in the field, and a sealed battery compartment—sized for two CR-123A or AA cells—keeps your electronics dry and accessible. This is a workhorse stock for hunters, 3-gun competitors, and tactical shooters who want a do-everything platform without permanent modifications.
FAB Defense's synthetic construction keeps weight down and resists field wear; the matte black finish blends into any rifle setup. Installation is straightforward on any standard AR buffer tube, and the adjustable cheek rest means you're not locked into one sight system or shooter preference. This is the kind of component that earns its real estate on your rifle because it solves real problems—rattle, sling routing, battery storage, and optic-to-face fit.
| Brand | FAB Defense |
| Model | GLR-16 |
| Finish | Matte Black |
| Material | Synthetic |
| Compatibility | AR-15/M4 rifles with Mil-Spec or Commercial diameter buffer tubes |
| Cheek Rest | Adjustable |
| Sling Attachment Points | 3 integrated slots (front, two rear) + 2 ambidextrous QD sockets |
| Battery Compartment | Water-resistant; holds 2x CR-123A or 2x AA |
Yes—the GLR-16 is designed for both Mil-Spec and Commercial diameter buffer tubes, so it will work on most standard AR platforms. Just confirm which tube diameter you have before installation.
Yes. The GLR-16 features an adjustable cheek rest, so you can dial in the height to match your optics setup and shooting position without adding shims or risers.
The stock has a sealed, water-resistant compartment that holds two CR-123A batteries or two AA batteries—ideal for storing backup cells or keeping a small power source dry in the field.
The GLR-16 gives you multiple options: three fixed sling attachment slots (one front, two rear) and two ambidextrous QD sling swivel sockets. This lets you run bungee, two-point, or quick-detach setups depending on your mission.
F.A.B. Defense
The FAB Defense GLR-16 adjustable cheekrest stock transforms your AR-15 or M4 platform rifle with a modular, shooter-centric design that works with both Mil-Spec and Commercial diameter buffer tubes. Built in matte black synthetic, this buttstock combines ergonomic features—including a contoured rubber butt pad and height-adjustable cheek rest—with practical mission-oriented attachments. Whether you're running a red dot, prism scope, or magnified optic, the GLR-16's cheek rest lets you dial in consistent sight picture and head-to-gun geometry without shimming or improvisation.
The stock's sling integration is comprehensive: you get three fixed slots (front and rear positions) plus two ambidextrous QD sling swivel sockets, giving you flexibility to run bungee, two-point, or dedicated QD attachments. The anti-rattle mechanism keeps your setup quiet in the field, and a sealed battery compartment—sized for two CR-123A or AA cells—keeps your electronics dry and accessible. This is a workhorse stock for hunters, 3-gun competitors, and tactical shooters who want a do-everything platform without permanent modifications.
FAB Defense's synthetic construction keeps weight down and resists field wear; the matte black finish blends into any rifle setup. Installation is straightforward on any standard AR buffer tube, and the adjustable cheek rest means you're not locked into one sight system or shooter preference. This is the kind of component that earns its real estate on your rifle because it solves real problems—rattle, sling routing, battery storage, and optic-to-face fit.
| Brand | FAB Defense |
| Model | GLR-16 |
| Finish | Matte Black |
| Material | Synthetic |
| Compatibility | AR-15/M4 rifles with Mil-Spec or Commercial diameter buffer tubes |
| Cheek Rest | Adjustable |
| Sling Attachment Points | 3 integrated slots (front, two rear) + 2 ambidextrous QD sockets |
| Battery Compartment | Water-resistant; holds 2x CR-123A or 2x AA |
Yes—the GLR-16 is designed for both Mil-Spec and Commercial diameter buffer tubes, so it will work on most standard AR platforms. Just confirm which tube diameter you have before installation.
Yes. The GLR-16 features an adjustable cheek rest, so you can dial in the height to match your optics setup and shooting position without adding shims or risers.
The stock has a sealed, water-resistant compartment that holds two CR-123A batteries or two AA batteries—ideal for storing backup cells or keeping a small power source dry in the field.
The GLR-16 gives you multiple options: three fixed sling attachment slots (one front, two rear) and two ambidextrous QD sling swivel sockets. This lets you run bungee, two-point, or quick-detach setups depending on your mission.