BCM .625 low profile gas block is well machined steel for pencil profile barrels. Set screws engage cleanly into the dimple. Black phosphate finish matches BCM barrels. Sits low enough to fit under any free float handguard.




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Bravo Company
Overview
The Bravo Company AR-15/M16 .625 Low-Profile Gas Block is designed to provide reliable gas flow in your mid-length gas system while keeping the overall profile of your build sleek and unobtrusive. With a diameter of .625 inches, this gas block fits seamlessly with your barrel, ensuring consistent cycling and performance. Made from durable steel and finished with a phosphate treatment, it stands up to the rigors of use, making it a solid choice for builds chambered in 5.56 NATO.
Bravo Company AR-15/M16 .625 Low-Profile Gas Block ranked #22 of the 75 gas blocks builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #15 of the 177 gas blocks builders have added. Builds with this gas block are nearly all chambered in 5.56 NATO, nearly all on mid-length gas, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 8 of the 10 retailers we track have it in stock. The best price crept up from $38.54 to $44.95 over August 2026. Buying today, the lowest price is $42.49 at Ammunition Depot, above August's low of $38.54, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
We ranked every gas block by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Gas Block Guide →Check it against the live catalog:
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Builds in the community that include the Bravo Company Ar-15/m16 .625 Low-Profile Gas Block
| Build | Parts | Total |
|---|---|---|
![]() | 14 | $3313.61 |
![]() | 13 | $1301.90 |
![]() | 27 | $2106.46 |
![]() | 27 | $3055.40 |
![]() | 9 | $1195.14 |
![]() | 16 | $1286.59 |
![]() | 12 | $960.64 |
![]() | 28 | $3935.33 |
![]() | 26 | $4006.41 |
![]() | 14 | $1161.91 |
2 global ratings
Top reviews
BCM .625 low profile gas block is well machined steel for pencil profile barrels. Set screws engage cleanly into the dimple. Black phosphate finish matches BCM barrels. Sits low enough to fit under any free float handguard.
BCM low profile gas block in .625 diameter for lightweight barrels. set screws hold position under sustained fire. phosphate finish matches a phosphate FSB area. sits flush under a free float rail with clearance