Description
This 5.56 chambered 16" Pencil Profile Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.
Quench Polish Quench (QPQ) is a specialized type of nitrocarburizing case hardening that increases corrosion resistance. It is sometimes known by the brand name of Tufftride, Tenifer Black Nitride 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. The technique is used when two or more of the following properties are required in a work piece:
Barrel
Specifications
Caliber 5.56
Length 16"
Material 4150 Chrome Moly Vanadium
Profile Pencil
Finish QPQ Corrosion Resistant
Gas System Length Carbine
Gas Block Journal .625"
Dimpled? No
Twist Rate 1:7
Muzzle Thread 1/2x28 TPI
Weight 23.2oz
Barrel Extension M4 Feed Ramps
Target Crown 11 Degree
Muzzle Device Info:
This adds a unique look compared to the average Flash Hider or Muzzle Break. Keep in mind that it does not use a crush washer so it should be torqued directly against the barrel shoulder. Its specs are as follows:
1.32" diameter
3.125" long
6061 aluminum
Black hard anodized finish
3.8 oz.
3/4" wrench flats
Threaded 1/2x28 for .223/5.56 or smaller
SKU: RTB55616PC-GDFC556BLK
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Watch what you get sent. I ordered one with a mid length gas port and got a pistol gas port model.