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.
Prices checked
Bravo Company AR-15/M16 .625 Low-Profile Gas Block ranked #34 of the 67 gas blocks builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #17 of the 191 gas blocks builders have added. Builds with this gas block are mostly chambered in 5.56 NATO (63%, then .223 Wylde 27%), split between mid-length (50%) and carbine-length (35%) gas systems, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today 8 of the 10 retailers we track have it in stock. The best price drifted down from $44.95 to $39.16 over September 2026 without a real sale. Buying today, the lowest price is $44.95 at Bravo Company USA, above September's low of $38.54, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 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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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Bravo Company Ar-15/m16 .625 Low-Profile Gas Block
| Build | Parts | Total |
|---|---|---|
![]() | 14 | $3483.08 |
![]() | 13 | $1308.66 |
![]() | 27 | $2063.67 |
![]() | 27 | $3035.89 |
![]() | 9 | $1197.60 |
![]() | 16 | $1299.05 |
![]() | 12 | $925.75 |
![]() | 28 | $3919.63 |
![]() | 26 | $4014.73 |
![]() | 14 | $1166.83 |
1 global rating
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.