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CMMG MC 4140CM .300 Blackout 8" Pistol Length Barrel Sub-Assembly Black
$129.99 35% off MSRP 13 in
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.750 Gas Journal
1:7 Twist
300 AAC Blackout Chamber
4140 Chrome Moly
8.0";Medium Taper Profile"
Pistol length gas port
Salt Bath Nitride Finish inside and out
Threaded 5/8-24
Specifications
Caliber
Brand
Model
Series
MT
MPN
30D810A
UPC
815835016283
MSRP
$199.95
Barrel Length
8"
Finish
Nitride
Sights
None
Description
The CMMG MC 4140CM is a pistol-length barrel sub-assembly chambered in .300 Blackout for AR-15 pattern rifles. It is intended for builders and owners who want a short, suppressor-ready barrel for the 300 Blackout cartridge.
The barrel is machined from 4140 CrMo steel with an 8-inch length, a medium taper profile, and a 0.750-inch gas block journal. It is threaded for muzzle attachments and finished in salt bath nitride, inside and out. The sub-assembly includes an installed barrel extension and is headspaced.
The assembly is a pistol-length gas port design and ships without sights. It fits AR-15 pattern receivers and is supplied in black.
- Caliber: 300 AAC Blackout/Whisper (7.62x35mm)
- Barrel Length: 8 inches
- Material: 4140 CrMo steel
- Finish: Salt bath nitride, inside and out
- Gas Block Journal: 0.750 inch
- Threaded: Yes
- Platform: AR-15
- Sights: None