ASK AN EXPERTDescription
- Zeroed drop-in trigger
- Zeroed 60°/90° ambi safety
- Zeroed AR15 ambi charging handle
- Zeroed AR15 bolt catch
- Zeroed AR15 polymer dust cover
- Zeroed extended mag release button
Delivering a heavy-hitting .30 caliber round on target, the CMMG .300blk was originally designed around being a subsonic round for use in shorter barrel, suppressed rifles. Additionally, .300blk set out to utilize as many M4/AR15 parts and ammo components as possible. Great for home defense and suppressed use in subsonic loadings, .300blk has evolved into a serious challenger to other intermediate cartridges like 7.62x39mm in supersonic form. Fitted with the suite of ZEROED parts.
Warranty Information
| Platform | MK4 |
| Caliber | .300 BLK |
| Barrel Length, in | 16.1" |
| Operating System | Direct Impingement |
| Barrel Twist | 1:16 |
| Barrel Contour | MT |
| Barrel Material | 4140CM, SBN |
| Muzzle Device | CMMG ZEROED Muzzle Brake |
| Muzzle Thread | 5/8x24 |
| Gas Port Location | Carbine |
| 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 | Carbine |
| Receiver Extension | CMMG 6 Position Fastback with Ambi Sling Plate |
| Stock | CMMG Ripstock |
| Trigger Type | ZEROED Drop-In |
| Trigger Guard | CMMG ZEROED Trigger Guard |
| Safety Selector | CMMG ZEROED 60/90 Degree |
| Magazine | Magpul 30rd Pmag |
| Length, in | 32.5" |
| Weight, lbs | 6.2 |
