CMMG 16" 300BLK MK4LE AAC BLACKOUT Complete Upper Carbine Handguard
The many benefits of this round include ability to upgrade your AR firepower plus use your standard AR15 5.56 lower, bolt carrier group AND EVEN MAGAZINES! This Round's Popularity is growing at a Tremendous Rate. NOTE: Ammo shown is for Reference only. VTSupply does NOT carry ammo. #1- 55gr 5.56 (supersonic,shown for size comparison), #2- 115gr 6.8 Siverstate Armory (supersonic,shown for size comparison), #3- 110gr 300 Whisper Hornady Vmax (supersonic), #4- 140gr 300BLK Lehigh Defense (supersonic), #5- 220gr 300BLK Remington OTM (subsonic), #6- 208gr 300 Whisper Hornady Amax (subsonic).
- Carbine Length Handguard
- F-Marked Front Sight Base
- Carbine Length Gas System
- Flat-top A3 Upper Receiver
- Compatible with standard AR15 lowers and magazines
- 16" Nitrided Barrel
- 1:8 Twist
- 5/8x24 Threaded A2 Style Flash Hider
- Chambered in 300 AAC Blackout
CMMG now uses +0.002" Head Space gauges which is the new industry standard. Customers trying to use standard gauges will find they do not check correctly.
Our basic upper, the Mk4 LE features a nitrided 16.1" 4140 CrMo steel barrel in a M300 multi-role barrel profile. The standard configuration includes a "F" marked front sight base and M4 style hand guards.
INCLUDES: 300 BLACKOUT REVOLUTION UPPER (BCG AND CHARGING HANDLE INCLUDED)
What is a WASP barrel?
W.A.S.P., or Weapon Armored Surface Protection, is simply a modern alternative to chrome lining. W.A.S.P. is a proprietary finish that provides the same durability and ruggedness as chrome lining, without the accuracy loss inherent in chrome lining. Additionally, W.A.S.P. not only protects the inside of the barrel, but the outside as well. Its matte black finish does not reflect. CMMG WA.S.P. corrosion resistance outperforms conventional chrome lining in salt water sea spray tests and provides, rugged reliability and durability essential to military grade firearms.
Part Number: 30BF8C0