
Availability: In Stock
A BCM low-profile gas block is a core component for any AR-15 or LR-308 build that demands reliability and precise fit. Unlike bulkier standard-profile blocks, the low-profile design keeps your rail system and mounted accessories clear of interference while maintaining the gas regulation your rifle needs to cycle reliably. Bravo Company machines these blocks to Mil-Spec tolerances from quality steel, then phosphate-finishes them for dependable corrosion and wear resistance—whether you're running a duty rifle, a precision build, or a hard-use hunting platform.
Installation is straightforward: the block mounts via set screws, giving you a secure hold without permanent modifications. BCM offers two bore sizes to match your barrel's gas port diameter, so you get the right fit for your specific setup. The low-profile footprint lets you maximize rail real estate for optics, lights, and other gear without forcing compromises on your intended configuration.
If you're building an AR or upgrading a gas system, a precision-machined, properly-sized gas block is non-negotiable. BCM's reputation in the AR world is built on attention to detail and no-nonsense performance—and this block reflects that standard.
| Brand | Bravo Company (BCM) |
| Product Type | Low-Profile Gas Block |
| Compatibility | AR-15, LR-308 barrels |
| Bore Sizes Available | .625", .750" |
| Material | Steel |
| Finish | Phosphate |
| Mounting | Set screws |
| Tolerance Standard | Mil-Spec |
The block comes in two bore sizes: .625" and .750". You'll need to match the bore diameter to your barrel's gas port. Verify your barrel's gas port size before ordering to ensure proper fit.
Yes. The low-profile design is specifically engineered to minimize interference with picatinny rails and mounted accessories, giving you more usable rail space compared to standard-profile blocks.
The block mounts via set screws that you tighten to secure it to the barrel. The set-screw design allows clean installation without permanent modifications and enables removal or repositioning if needed.
Yes, the BCM low-profile gas block is designed to fit both AR-15 and LR-308 barrels, making it versatile across the most common modern sporting rifle platforms.



SKU: 115779869 • Width: 3.1in • Height: 1.3in • Depth: 6.3in • Weight: 0.13oz





Availability: In Stock
A BCM low-profile gas block is a core component for any AR-15 or LR-308 build that demands reliability and precise fit. Unlike bulkier standard-profile blocks, the low-profile design keeps your rail system and mounted accessories clear of interference while maintaining the gas regulation your rifle needs to cycle reliably. Bravo Company machines these blocks to Mil-Spec tolerances from quality steel, then phosphate-finishes them for dependable corrosion and wear resistance—whether you're running a duty rifle, a precision build, or a hard-use hunting platform.
Installation is straightforward: the block mounts via set screws, giving you a secure hold without permanent modifications. BCM offers two bore sizes to match your barrel's gas port diameter, so you get the right fit for your specific setup. The low-profile footprint lets you maximize rail real estate for optics, lights, and other gear without forcing compromises on your intended configuration.
If you're building an AR or upgrading a gas system, a precision-machined, properly-sized gas block is non-negotiable. BCM's reputation in the AR world is built on attention to detail and no-nonsense performance—and this block reflects that standard.
| Brand | Bravo Company (BCM) |
| Product Type | Low-Profile Gas Block |
| Compatibility | AR-15, LR-308 barrels |
| Bore Sizes Available | .625", .750" |
| Material | Steel |
| Finish | Phosphate |
| Mounting | Set screws |
| Tolerance Standard | Mil-Spec |
The block comes in two bore sizes: .625" and .750". You'll need to match the bore diameter to your barrel's gas port. Verify your barrel's gas port size before ordering to ensure proper fit.
Yes. The low-profile design is specifically engineered to minimize interference with picatinny rails and mounted accessories, giving you more usable rail space compared to standard-profile blocks.
The block mounts via set screws that you tighten to secure it to the barrel. The set-screw design allows clean installation without permanent modifications and enables removal or repositioning if needed.
Yes, the BCM low-profile gas block is designed to fit both AR-15 and LR-308 barrels, making it versatile across the most common modern sporting rifle platforms.
SKU: 115779869 • Width: 3.1in • Height: 1.3in • Depth: 6.3in • Weight: 0.13oz


