CMMG Resolute 100 MK4 16" .300 Blackout M-LOK AR-15 Upper Receiver

The Resolute 100 MK4 AR-15 .300 Blackout Upper Receiver features an 16" 1:7 twist medium taper profile barrel. The MK4 comes with an A2 Flash Hider, CMMG Charging Handle, CMMG Bolt Carrier Group, and a RML 15" M-LOK Free Float handguard.

Barrel	16" 1:7 twist medium taper 4140 Chromoly with Black Salt Bath Nitride finish
Caliber	.300 Blackout
Handguard	RML 15" M-LOK Free Float Handguard
Sight	None
Gas System	Carbine
Muzzle Device	A2 Flash Hider
Charging Handle	CMMG
Bolt Carrier Group	CMMG