Description
Radical Firearms produces quality precision made barrels perfect for your next build or replacing an old barrel. Machined from 41V50 Chrome Moly Vanadium Steel and finished with a corrosion resistant Melonite. This exceptionally durable barrel has a bore that is harder than traditional chrome lining without the accuracy robbing side effects.
Chambered for the 5.56 NATO cartridge, with a button rifled 1:7 twist rate, this barrel will yield superior performance throughout the full range of .223/5.56mm ammunition, including the legendary 77-grain open tip match.
Includes a low profile set screw gas block, stainless steel mid-length gas tube, and Radical Firearms Zero Impulse Muzzle Brake.
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Specifications
Barrel Coating: Melonite
Barrel Contour: SOCOM
Barrel Length: 16
Barrel Lining: Melonite
Barrel Material: 41V50 Chrome Moly Vanadium Steel
Brand: Radical Firearms
Caliber Gauge: 5.56 NATO
Feed Ramps: M4
Gas Seat Diameter: .750
Gas System Length: Mid-Length
Manufacturer.: Radical Firearms
Platform: AR-15
Thread Pattern: 1/2 X 28
Twist Rate: 1:7
MPN#: B16CV556SOC-M-17-CMBO-ZS
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Comments (2)
Not chrome lined, but melonite (qpq) treated, which is arguably as good in most instances, and better in others. Hard chrome might be slightly better at high rate of fire.
1:7 twist is good for 55gr and up, but prefers higher grain, like 69 and 77gr bullets.

Seems like a good deal. Comments?
Is this chrome-lined?
Also, 1:7 is better for higher grain bullets right?