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Banshee 300 Pistol
Mk4, 5.56mm, 5.56x45mm


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Banshee 300 Pistol, Mk4, 5.56mm

If you want the best an AR-15 has to offer, then the BANSHEETM 300 Series 5.56 is your choice. This AR is fitted with every desired feature including a choice of 10 Premier Cerakote colors, laser engraved model name on the lower receiver, updated ambidextrous controls and sling points, Magpul grip, CMMG's revolutionary RIPBRACE®, and CMMG's SV muzzle brake. Chambered in 5.56, this BANSHEE 300 Series is the shortest 5.56 we have to offer, giving you the mobility you’ve always wanted in the popular 5.56 caliber.

The Mk4 platform accepts standard AR-15 style magazines, and is the most versatile of the CMMG platforms that can utilize all of CMMG’s AR Conversion Kits. With a magazine change and swapping out the bolt carrier group or upper receiver group, the Mk4 platform can be changed from 5.56x45mm to .22 LR, 5.7x28mm, 9mm and many more.

All CMMG products come with our Lifetime Quality Guarantee.

Technical Specifications

Platform Mk4
Caliber 5.56mm, 5.56x45mm
Operating System Direct Impingement
Barrel Length 10.5
Barrel Twist 1:7
Barrel Contour MT
Barrel Material 4140CM, SBN
Barrel Twist 1:7
Muzzle Device SV Brake
Muzzle Thread 1/2-28
Gas Port Location Carbine
Gas Block 0.750 Non-Adjustable
Upper Receiver Forged 7075-T6 Aluminum M4 Type
Lower Receiver Forged 7075-T6 Aluminum AR15 Mil-Spec
Hand Guard CMMG RML9 M-Lok Handguard
Finish Cerakote
Charging Handle CMMG ZEROED Ambi Charging Handle AR15
Pistol Grip Magpul MOE
Receiver Extension CMMG 6 Position Fastback w/Ambi Sling Plate
Stock / Brace CMMG RipBrace
Trigger Type CMMG Single Stage Mil-Spec Style
Trigger Guard Magpul MOE
Safety Selector CMMG Ambi
Magazine 30RD Magpul PMAG
Weight 5.9 lbs

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