.223 Wylde chamber that safely and reliably fires both .223 Remington and 5.56 NATO, with improved accuracy due to more consistent chamber pressures
4150CMV ordnance-grade barrel steel
Chrome-lined, 6 Groove
Honed and hand-lapped w/ Polished chamber
Mid-Length gas system w/ 0.625" dimpled gas block journal
½ x 28 TPI muzzle threads
1-8 twist rate, 1.7 lbs
