16″ 5.56mm 1:7 Twist M4 4150 Barrel (High Polish Tin Coated) (Carbine Length Gas)

Description

This 16″ barrel is chambered in 5.56mm with a 1:7 twist rate, designed for 5.56×45 and .223 Rem platforms. Constructed from 4150 Chromoly Steel, it features an M4 Contour Profile to balance weight and thermal performance. The exterior finish is a High Polish Tin Coated surface, which provides a distinct aesthetic while enhancing lubricity and durability.

Internally, the barrel includes M4 Feed Ramps to ensure smooth cartridge feeding from standard upper receivers. The gas system is configured as a Carbine Length Gas System, utilizing a .750 Gas Platform System for compatibility with standard Carbine Length Gas blocks and tubes. The muzzle end is threaded at 1/2 by 28 Thread, allowing for the attachment of compatible muzzle devices. Markings are Spiral Engraved Near Break for clear identification.

• Material: 4150 Chromoly Steel
• Chamber: 5.56mm / .223 Rem
• Twist Rate: 1:7
• Profile: M4 Contour
• Gas System: Carbine Length
• Thread: 1/2 by 28
• Weight: 32 0z

Supplied as a standalone barrel, this component requires assembly into a complete upper receiver. The High Polish Tin Coated finish offers a high-gold appearance distinct from standard black oxide or Nitride treatments.