Cartridge	5.56x45mm NATO
Color	Black
Finish	Anodized
Material	Aluminum
Barrel Length	16 Inches
Twist	1:7 Inches
Threads	1/2″-28
Barrel Finish	Black
Chrome Lined	Yes
Gas Block Diameter	0.75 Inches
Gas System Length	Carbine
M4 Feed Ramps	Yes
Upper Receiver Type	A3 Flat-Top
Barrel Material	Chrome Moly Steel
Handguard	Centurion CMR 13″ M-Lok
Bolt Carrier Assembly Included	Yes
Muzzle Device	A2 Flash Hider
Mil-Spec or Commercial	Mil-Spec
Country of Origin	United States of America
Compatible With	AR-15

Cartridge	22 Long Rifle
Color	Armor Black
Finish	Cerakote
Material	Aluminum
Weight	4 Pound
Barrel Length	17 Inches
Twist	1:16 Inches
Threads	1/2″-28
Barrel Contour	Medium
Barrel Finish	Black Salt Bath Nitride
Chrome Lined	No
Upper Receiver Type	A3 Flat-Top
Barrel Material	4140 Chrome Moly Steel
Handguard	CMMG EML15 M-LOK
Bolt Carrier Assembly Included	Yes
Muzzle Device	CMMG ZEROED MUZZLE BRAKE
Country of Origin	United States of America
Compatible With	AR-15

Cartridge	300 AAC Blackout (7.62x35mm)
Finish	Matte Black
Material	Aluminum
Weight	3.375 Pound
Barrel Length	7.5 Inches
Twist	1:8 Inches
Threads	5/8″-24
Barrel Contour	Heavy
Sights	No
Barrel Finish	Parkerized
Chrome Lined	No
Gas Block Diameter	0.75 Inches
Gas System Length	Pistol
Upper Receiver Type	A3 Flat-Top
Barrel Material	Steel
Handguard	M-LOK
Bolt Carrier Assembly Included	Yes
Muzzle Device	Flash Hider
Mil-Spec or Commercial	Mil-Spec
Country of Origin	United States of America
Compatible With	AR-15

Colt AR-15 Upper Receiver Assembly 5.56x45mm 16″ Barrel with Centurion CMR 13″ M-LOK Handguard

Specifications