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22 ARC Upper Group | 20" | Right Side | Armor Black
22 ARC Upper Group | 20" | Left Side | Armor Black
22 ARC Upper Group | 20" | Right Side | Charcoal Green
22 ARC Upper Group | 20" | Left Side | Charcoal Green
22 ARC Upper Group | 20" | Right Side | Coyote Tan
22 ARC Upper Group | 20" | Left Side | Coyote Tan
22 ARC Upper Group | 20" | Right Side | Midnight bronze
22 ARC Upper Group | 20" | Left Side | Midnight Bronze
22 ARC Upper Group | 20" | Right Side | Sniper Grey
22 ARC Upper Group | 20" | Left Side | Sniper Grey
22 ARC Upper Group | 20" | Right Side | Tungsten
22 ARC Upper Group | 20" | Left Side | Tungsten
CMMG Product #28B3D0C-AB
CMMG Product #28B3D0C-CG
CMMG Product #28B3D0C-CT
CMMG Product #28B3D0C-MB
CMMG Product #28B3D0C-TNG

Upper Group, ENDEAVOR, Mk4, 22 ARC, 20"

PRODUCT #28B3D0C

See Full Specifications
$999.95
Free Shipping over $150.00
Lifetime Quality Guarantee

Product Restrictions

Please Allow 15-30 business days To Process Your Order. 

State/local restrictions may apply in CA, CO, CT, DE, DC, HI, IL, MD, MA, MI, NJ, NY, or WA. Customers must review our Firearms Shipping Policy prior to ordering.

Firearms with attached pistol brace. Please confirm your FFL is accepting transfers for pistol brace equipped firearms prior to ordering.  

WARNING: Cancer and Reproductive Harm | https://www.p65warnings.ca.gov/

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Commonly Purchased with Upper Group, ENDEAVOR, Mk4, 22 ARC, 20"

Magazine, AR15, 6.5 Grendel / 6MM ARC / 22 ARC, 10rd
Magazine, AR15, 6.5 Grendel / 6MM ARC / 22 ARC, 10rd
Starting at $14.95

Upper Group, ENDEAVOR, Mk4, 22 ARC, 20"

5.56mm is tried and true, but 22 ARC brings 22-250 performance to the lighter-weight AR15 (Mk4) platform, and the ENDEAVOR® Mk4 upper group with its 20" barrel is sure to extract all the ballistic performance you need.

Available in seven different Cerakote finishes, every ENDEAVOR Upper Group includes the bolt carrier group as well as a carefully curated selection of parts and accessories including:

ZEROED AR15 Ambi Charging Handle

ZEROED AR15 Polymer Dust Cover

ZEROED Muzzle Brake 5.56mm

 

Lifetime Quality Guarantee

We aim to please, that’s why every CMMG product is backed by our Lifetime Quality Guarantee against material and workmanship defects. Learn More.

Specifications

Platform Mk4
Caliber .22 ARC
Operating System Direct Impingement
Barrel Length 20
Barrel Twist 1:7
Barrel Contour MT
Barrel Material 4140CM, SBN
Muzzle Device CMMG ZEROED Muzzle Brake
Muzzle Thread 1/2 x 28
Gas Port Location Rifle
Gas Block Adjustable 0.750"
Upper Receiver Billet 6061 T6 Aluminum
Hand Guard CMMG EML15 M-LOK
Finish Cerakote
Charging Handle CMMG ZEROED Ambi
Weight 4.7 lbs
Length 28.9"

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