CMC Triggers AR-15 Low Profile Gas Block 0.750 Journal 17-4PH Stainless Nitride 81611
by Cmc Triggers
User Ratings
No ratings yet
Be the first to review this product
CMC Triggers AR-15 Low Profile Gas Block is a durable all-steel AR-15 gas system component designed for barrels with a 0.750 gas block journal (outside diameter at the gas port). Machined from 17-4PH stainless steel and finished in black nitride, this one-piece low-profile design fits under most free-float handguards for a clean, streamlined setup. It mounts securely to the barrel using set screws and is compatible with standard mil-spec gas tubes and hardware (including CMC Triggers nitride gas tubes).
Product Highlights
- Low-profile 0.750 journal gas block designed to fit under most free-float AR-15 handguards
- Machined from strong 17-4PH stainless steel for long-term durability
- Black nitride finish helps enhance surface wear resistance and corrosion resistance
- Secure set-screw attachment method (dual hex head set screws) for solid barrel retention
- Lightweight construction (approx. 0.66 oz) for minimal added front-end weight
Specs
- Brand: CMC Triggers
- Manufacturer Part Number: 81611
- UPC: 859464006291
- Platform Compatibility: AR-15
- Gas Block Journal Diameter: 0.750 in
- Profile: Low profile
- Material: 17-4PH stainless steel
- Finish/Color: Black nitride
- Attachment Method: Set screws (dual hex head set screws)
- Length: 1.35 in
- Weight: 0.66 oz
- Country of Origin: United States
Specifications
- Manufacturer:
- Cmc Triggers
- Category:
- gas-block
- Platforms:
- AR-15
- Weight:
- 0.66 oz
- Length:
- 1.4"
- UPC:
- 8228865966202
- MPN:
- 81611
- 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
$44.98
Lowest
$43.95
Highest
$44.98
Price Alert
Sign in to save a target price and receive an email when this component drops.
Sign In to Set AlertSimilar Products

.750 Low Profile Gas Block
Aero Precision
$28.00

Aero Precision Adjustable .750 Lower Profile Gas Block - APRH101614C
Aero Precision
$55.79

Superlative Arms Bleed Off Clamp On Adjustable Low Profile Gas Block AR-15, LR-308 0.750" Black Melonite
Superlative Arms
$75.69

Superlative Arms Solid Set Screw Direct Impingement Adjustable Gas Block 0.875" x 1", Tan
Superlative Arms
$69.33

Badger Ordnance Mk 12 SPR Gas Block AR-15, LR-308 0.750 Black
Badger Ordnance
$58.94

.750 Adjustable Steel Gas Block Gen. 3 — Low Profile Set Screw AR-15/LR-308
AR-Stoner
$26.57

JP Enterprises A2 Style Gas Block 0.75" Black
Jp Enterprises
$154.99

BCM .75" Low Profile Gas Block, Black Phosphate - LGB-750
Bravo Company Manufacturing (BCM)
$44.99
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