User Ratings
No ratings yet
Be the first to review this product
The CMMG 55DA3AC is a low profile gas block for barrels with a .625" journal, fitting AR-15 and LR-308 builds. It is made from 4140 chrome moly steel with a nitride finish and secures with the two included set screws, suiting new builds or replacement of worn parts.
Specifications
- Manufacturer:
- CMMG
- Category:
- gas-block
- Platforms:
- AR-15
- Weight:
- 1 oz
- Length:
- 0.6"
- UPC:
- 815835012780
- MPN:
- 55DA3AC
- Required Component:
- Yes
Parts Cabinet
Track parts you own or plan to buy.
Where to Buy
Have one to sell?
Sponsored
MantisX
The smart way to train your AR build
Built your rifle — now train it. BlackBeardX installs in minutes and turns your AR into a full dry fire system with smart feedback on every pull.
Shop BlackBeardXPrice History
Current
$29.98
Lowest
$29.98
Highest
$30.83
Price Alert
Sign in to save a target price and receive an email when this component drops.
Sign In to Set AlertSimilar Products
AR-STONER .750 Adjustable Low Profile Set Screw Gas Block, Gen 3, AR-15/LR-308 (MAR001S-ADJ-G3)
AR-Stoner
$26.57
Aero Precision Adjustable .750 Low Profile Gas Block (APRH101614C)
Aero Precision
$55.79
Aero Precision .750 Low Profile Gas Block (APPG100530)
Aero Precision
$28.00
Superlative Arms Bleed Off Clamp On Adjustable Low Profile Gas Block AR-15, LR-308 0.750" Black Melonite
Superlative Arms
$72.55
Daniel Defense .750 Low Profile Clamp-On Gas Block (25-079-05006)
Daniel Defense
$50.00
Superlative Arms Solid Set Screw Direct Impingement Adjustable Gas Block 0.75" x 1", Tan
Superlative Arms
$89.99
2A Armament .750 Low Profile AR-15 Gas Block, Steel, Black Oxide (2A-STGB-1)
2A Armament
$46.99
Superlative Arms Solid Set Screw Direct Impingement Adjustable Gas Block 0.875" x 1", Tan
Superlative Arms
$72.66
Builds Using This Part
No builds yet — be the first to use this part.
Related Guides
Guide
AR-10 Barrel Length, Gas System, and Intended Use
How AR-10 barrel length and gas system choices affect weight, recoil, and role fit for hunting, precision, and general-purpose rifles.
3 min read
Guide
AR-15 Components: A Complete Reference Guide
A comprehensive overview of every major component in an AR-15 build—including what's inside bolt carrier groups and parts kits—organized by assembly for new builders.
12 min read
Guide
AR-15 Malfunction Diagnosis: Reading What Your Rifle Is Telling You
A systematic guide to diagnosing AR-15 malfunctions (failure to feed, failure to extract, failure to eject, and double feeds) with root causes and how to isolate them.
7 min read