Stock Status: Always Armed 16" Medium Profile Barrel .300 BLK (Pistol Length) + Premiere Manufacturing Complete AR15 BCG (Polished Black Nitride)
Barrel Specs:
This 16 inch Pistol Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish.
Quench Polish Quench (QPQ) is a specialized type of nitrocarburizing case hardening that increases corrosion resistance. It is also known by the brand names of H&M Blacknitride+ (black nitride), Tufftride, Tenifer, or Melonite. QPQ is a huge improvement over chrome lined barrels. Unlike chrome lining, where the chrome is built up on the surface, QPQ converts the surface without the risk of dimensional build up. QPQ makes your gun’s metal 10 times stronger than it was originally, increases the velocity of your barrel by a few hundred feet-per-second, and slickens the surface to make your gun extremely lubricated.
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Barrel
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Specifications
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| Caliber | .300 |
| Length | 16" |
| Material | Chrome Moly Vanadium |
| Profile | Medium |
| Finish | QPQ Corrosion Resistant |
| Gas System Length | Pistol |
| Gas Block Journal | .750" |
| Twist Rate | 1:7 |
| Muzzle Thread | 5/8x24 Threaded |
| Weight | 29.6oz |
BCG Specs:
The best BCGs for replacement parts and builds have strong and dependable carriers with trusty bolt assemblies that cycle reliably. That's exactly what you'll get with this high quality complete BCG. Premiere Manf M16 bolt carrier groups are polished before and after the H&M BLACKNITRIDE+™ process, producing a beautiful finish and reducing the friction coefficent. The carrier is made from 8620 steel. The bolt is made from 9310 steel. The 223 Bolt and Bolt Carrier Assembly is compatible with 5.56 NATO and 300 Blackout.
- Enhanced 9310 Steel (Bolt)
- 8620 Tool Steel (Carrier)
- Mil-Spec Extractor Spring, black extractor insert, Viton O-Ring
- Tool Steel Extractor
- Shrouded Firing Pin
- Mil-Spec Gas Key (4130 Steel) attached with Grade 8 hardware and heavily staked
- Caliber: .223 / 5.56 / 300 Blackout
- Bolt is shot Peened and MPI
- All BCG components pre-polished before being processed and then post polished!
