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griffen679no regrets
Reviewed on March 4, 2026
perfect addition to my build
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Cmmg Ar-15 Gas Block Assembly, Low Profile, .750
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CMMG
Overview
The Cmmg AR-15 Gas Block Assembly is a low profile component designed for a .750-inch gas block diameter, making it a reliable choice for standard gas systems. Constructed from steel and finished with a nitride treatment, this gas block effectively channels gas from the barrel to cycle your action while maintaining a streamlined profile that fits under handguards without adding bulk. This assembly is often found in builds utilizing a carbine gas system, particularly for those chambered in 5.56 NATO.
Specifications
MPN55DA38D
MaterialSteel
Gas Block Diameter.750
AdjustableNo
FinishNitride
ProfileLow Profile
Frequently Built With
Based on build data
Cmmg Ar-15 Forward Assist Kit
CMMG AR-15 HD Pivot and Takedown Pin Parts Kit - 55AFF3B
Bravo Company M16 Bolt Carrier Group Black
Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4
Radian Forward Assist - 7075 Aluminum - Black
Wmd Guns Ar-15 Gas Tube Nitromet Mid-Length
| Product | Category | Times Built Together |
|---|---|---|
| Cmmg Ar-15 Forward Assist Kit | 5 | |
| CMMG AR-15 HD Pivot and Takedown Pin Parts Kit - 55AFF3B | 4 | |
| Bravo Company M16 Bolt Carrier Group Black | 4 | |
| Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4 | 4 | |
| Radian Forward Assist - 7075 Aluminum - Black | 3 | |
| Wmd Guns Ar-15 Gas Tube Nitromet Mid-Length | 3 |
Builds Featuring This Part
See all 8 →Builds in the community that include the Cmmg Ar-15 Gas Block Assembly, Low Profile, .750
| Build | Parts | Total |
|---|---|---|
 | 22 | $1453.22 |
 | 20 | $790.84 |
 | 19 | $3845.61 |
| 17 | $1788.69 |
 | 15 | $2754.65 |
 | 19 | $1341.47 |
 | 17 | $2199.71 |
 | 24 | $3182.71 |
Customer reviews
5.0out of 5
1 global rating