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  • CMMG 55AACF1 Mk4 B16 Semi-Automatic 5.56 NATO 16-inch 30rd 6-Position Black Stock Black Nitride

CMMG 55AACF1 Mk4 B16 Semi-Automatic 5.56 NATO 16-inch 30rd 6-Position Black Stock Black Nitride

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Action
Semi-Auto
Barrel Length
16.1in
Caliber
5.56×45mm NATO
Capacity
30
Finish Per Color
Black
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Specification
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Make: CMMG
Model: MK4 B16
Caliber: 5.56 NATO
Barrel Length: 16"
Capacity: 30+1
Trigger: Single-Stage
OAL: 34"
Weight: 7.2 lbs
Stock: 6-Position Black
Metal Finish: Black Nitride
Muzzle: Target Crown
Receiver Material: Steel
Sights: None, Optic Ready
Barrel Description: 4140 Chrome Moly
Twist: 1:7"
Barrel Length Range: 16.00" to 17.99"
Weight Range: 6.00 lbs to 7.99 lbs
Hand: Right
Stock: Synthetic
Metal Finish: Blued/Black

When modularity, accuracy, and quality are all important, the Mk4 B16 is the rifle of choice. The Mk4 B16 features CMMG's RKM11 KeyMod free-float handguard and nitrided bull barrel to maximize shot repeatability.

Action
Action
Semi-Auto
Barrel
Barrel Length
16.1in
Twist
1:7"
Caliber
Caliber
5.56×45mm NATO
Capacity
Capacity
30
Dimensions
Overall Length
34"
General
Finish Per Color
Black
Model
MK4 B16
Type
Centerfire
Grip
Hand Orientation
Right-Handed
Receiver
Receiver Material
Steel
Sights
Sights
Full Length Picatinny Rail
Stock
Stock
Telescopic Buttscock / CMMG RKM11 KeyMod Handguard
Trigger
Trigger
Single-Stage
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