The CMMG Endeavor 300 MK4 Upper provides a reliable and durable finish to an AR-style rifle with great accuracy and performance. It comes chambered in 6mm ARC with a 20 inch barrel. Features include an M-LOK handguard, an optics ready flat-top, and three 10 round magazines. Get this upper today for the best price online from GrabAGun!
Easier approval. $0 Down. Easy installments up to 36 months. Approvals up to $5,000. No hard credit inquires for Pre-Approval. Apply and Buy Today!
Shoot Now, Pay Later® 4 Pay
Pay in 4. Four Payments, no interest for purchases between $150 to $985. No hard credit inquires for Pre-Approval. Apply and Buy Today!
Shoot Now, Pay Later® 4 Pay and Traditional Financing
Try Pay in 4 at 0% interest for purchases between $150 to $985. Or Select Easy installments up to 36 months. Approvals up to $5,000. No hard credit inquires for Pre-Approval. Apply and Buy Today!
CMMG's ENDEAVOR 300 Upper Group Kit is chambered in Hornady's 6mm ARC. Designed for superior long-range accuracy, this upper group kit features a 20-inch barrel and includes three 10-round magazines so that you can easily pair with your existing AR15 lower receiver and squeeze out every drop of ballistic performance from this exciting new caliber.
Endeavor 300 MK4 Upper Specifications
Caliber: 6mm ARC
Model: Endeavor 300
Series: MK4
Barrel Length Range: 20" to 20.99"
Sights: None, Optic Ready
Capacity: 10rd
Muzzle: CMMG SV Brake
Firearm Fit: AR-15
Handguards: 15" CMMG RML M-LOK
Includes: 3 Magazines
Receiver Finish: Black Hard Coat Anodized
Receiver Material: 7075 T6 Aluminum
Thread Pattern: 5 / 8"-24 tpi
Twist: 1:7.50"
Weight: 5.50 lbs
Barrel Description: Medium Taper
Barrel Finish: Black Nitride
Barrel Material: 416R Stainless Steel
Barrel Length: 20"
More Information
Barrel Length
20
Caliber
6mm ARC
Capacity
10
Condition
New in Box
Finish Per Color
Black
Manufacturer
CMMG
Manufacturer Part Number
60F869D
Model
Endeavor 300 MK4 Upper
Type
Uppers
UPC
810046230534
WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to WWW.P65WARNINGS.CA.GOV
Questions And Answers
Reviews
Due to increased state legislation around firearms, you must be 18 to access our site.
