Please READ - The 223 WYLDE chamber is an accurized 5.56 chamber. IT WILL shoot any 223 or 5.56 ammo more accurately than the 5.56 chamber.  These barrels have the Wylde chamber which was designed to make the 69gr SMK shoot better at mag length. Best accuracy will be acheived by handloading.  Melonite treated 4150 will easily last twice as long as stainless barrels. 3R rifling is a higher performance version of 5R rifling.

• Chamber: 223 Wylde
• Profile:  midweight-.850/.750/.718
• Fluted: No
• Barrel Length: 20"
• Twist Rate: 1:7.7- Hybrid 3R rifling
• Gas System: rifle Length
• Diameter at Gas Port: .750"
• Muzzle Thread Pitch: 1/2-28
• Material: 4150 Chrome Moly Vanadium Steel
• Finish: Melonite
• Process: Button Rifled
• Barrel Lining: Melonite
• Barrel Extension: M4
• Assembly: Stripped
• Weight: 2lb 14oz