Caliber/Gauge
5.56x45mm
Barrel Length
18"
Action
Semi
Front Sight
None
Rear Sight
None
Color
Black
Finish
Cerakote
Material
Aluminum
Handed
Right
There's a world of options when it comes to AR15s, and for those that want to reach out to further targets or hunt with 5.56, the 18-inch ENDEAVOR® Mk4 chambered in 5.56x45mm is an awesome choice. Despite all the different caliber offerings available today for AR15 pattern rifles, 5.56x45mm still stands as one of the most popular.
Built on our Mk4 AR15 platform, this ENDEAVOR can make use of just about any AR15 compatible component, and utilizes a nitride-finished 18-inch 416 stainless steel barrel for enhanced ballistic performance.
Each CMMG® ENDEAVOR rifle is purpose-built for long-range performance, with everything from the Magpul® MOE® rifle stock to the ZEROED muzzle brake, and every part in between selected for its utility to the avid marksman.
The EML 15 handguard maximizes customization potential. M-LOK® attachment slots at the 12, 3, 6, and 9 o'clock positions give you plenty of real estate to mount accessories, while the Picatinny rail sections allow for easy and solid mounting points for sights and accessories.
Platform Mk4
Caliber 5.56x45mm
Operating System Direct Impingement
Barrel Length 18
Barrel Twist 1:7
Barrel Contour MT
Barrel Material 416SS, SBN
Barrel Twist 1:7
Muzzle Device CMMG ZEROED Muzzle Brake
Muzzle Thread 1/2 x 28
Gas Port Location Rifle
Gas Block 0.750 Non-Adjustable
Upper Receiver Billet 6061 T6 Aluminum
Lower Receiver Mk4 Forged 7075 T6 Aluminum
Hand Guard CMMG EML15 M-LOK
Finish Cerakote
Charging Handle CMMG ZEROED Ambi
Pistol Grip CMMG ZEROED Pistol Grip
Buffer Type Rifle/A1, AR15
Receiver Extension A1
Stock / Brace Magpul MOE Rifle Stock
Trigger Type ZEROED Drop-In
Trigger Guard CMMG ZEROED Trigger Guard
Safety Selector CMMG ZEROED 60/90 Degree
Magazine Magpul 30rd PMAG
Weight 7 lbs
Length 37.8"
Built on our Mk4 AR15 platform, this ENDEAVOR can make use of just about any AR15 compatible component, and utilizes a nitride-finished 18-inch 416 stainless steel barrel for enhanced ballistic performance.
Each CMMG® ENDEAVOR rifle is purpose-built for long-range performance, with everything from the Magpul® MOE® rifle stock to the ZEROED muzzle brake, and every part in between selected for its utility to the avid marksman.
The EML 15 handguard maximizes customization potential. M-LOK® attachment slots at the 12, 3, 6, and 9 o'clock positions give you plenty of real estate to mount accessories, while the Picatinny rail sections allow for easy and solid mounting points for sights and accessories.
Platform Mk4
Caliber 5.56x45mm
Operating System Direct Impingement
Barrel Length 18
Barrel Twist 1:7
Barrel Contour MT
Barrel Material 416SS, SBN
Barrel Twist 1:7
Muzzle Device CMMG ZEROED Muzzle Brake
Muzzle Thread 1/2 x 28
Gas Port Location Rifle
Gas Block 0.750 Non-Adjustable
Upper Receiver Billet 6061 T6 Aluminum
Lower Receiver Mk4 Forged 7075 T6 Aluminum
Hand Guard CMMG EML15 M-LOK
Finish Cerakote
Charging Handle CMMG ZEROED Ambi
Pistol Grip CMMG ZEROED Pistol Grip
Buffer Type Rifle/A1, AR15
Receiver Extension A1
Stock / Brace Magpul MOE Rifle Stock
Trigger Type ZEROED Drop-In
Trigger Guard CMMG ZEROED Trigger Guard
Safety Selector CMMG ZEROED 60/90 Degree
Magazine Magpul 30rd PMAG
Weight 7 lbs
Length 37.8"
