Top off your next build with this RESOLUTE Mk4 Upper Group. Chambered, this upper group is a staple for any collection and comes ready to pair with the AR15 lower group of your choice. Specifications for CMMG Mk4 Resolute Upper Receiver Group: Manufacturer: CMMG Muzzle Device: CMMG Zeroed Muzzle Brake Color: Armor Black Fabric/Material: Billet 6061 T6 Aluminum Gas Block Journal Size-Diameter: .750 in Gun Rail: M-LOK Gun Type: Rifle Gun Make: CMMG Gun Model: CMMG Mk4 Magazine Included: No Package Contents: CMMG Mk4 Resolute Upper Receiver Group
2 reviews for CMMG Mk4 Resolute Upper Receiver Group
Only logged in customers who have purchased this product may leave a review.
Related products
$89.99
$55.19
$416.99
$424.15
$587.99
$1,094.67
$14.89
$1,309.00
dan –
I used a sprinco red spring and it cycled perfectly with 4 o’clock ejection firing winchester 145gr fmj.Relatively lightweight and streamlined good looks. On my POF lower it looks awesome! The ambi Charging handle is great for my scoped rifle as i tend to position them right on the edge of the receiver.
Doug –
Works great. Easy to install. Only complaint is it came with a small blemish on the receiver (Optics Planet may be getting CMMG blems). Once installed you couldn't see it unless it was pointed out. Love ambidextrous charge handle.