BCM 12.5″ 5.56 NATO 1:7 Kino Configuration Barreled Upper


  • 12.5” 41V50 chrome moly vanadium steel Govt. profile barrel with Manganese phosphate finish
  • Kino configuration
  • Carbine length gas system
  • Compatible with mid-length, drop-in handguards
  • Chambered in 5.56 NATO with 1:7 twist rate
  • 1/2×28 A2 flash hider
  • Chrome lined chamber and bore
  • High pressure tested and magnetic particle inspected
  • M4 feed ramps
  • MIL-SPEC F-Marked forged front sight
  • T-Marked Picatinny rail


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SKUBCM-URG-M4-12-KD Category

NOTE: This upper assembly has a barrel less than 16” in length. These uppers are intended for use in AR pistol or legal short-barreled rifle builds. Other configurations may violate Federal law.

Does not include a bolt carrier group or charging handle.

This bad boy is built around a 41V50 chrome moly vanadium steel barrel for the ultimate in durability and performance. Plus, the Kino Configuration allows for a extended sight radius on a shorter barrel without any cycling issues. So you’ll enjoy better accuracy with iron sights and a longer handguard without sacrificing reliability.


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