BCM 5.56 Govt. Profile Barreled Upper KeyMod KMR Alpha Rail – 12.5″


  • 12.5” 41V50 chrome moly vanadium steel Govt. profile barrel with Manganese phosphate finish
  • 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
  • T-Marked Picatinny rail
  • 10” BCM KMR ALPHA KeyMod Free Float Handguard
  • (1) 3” Picatinny rail section
  • (1) BCM KeyMod sling mount


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SKUURG-STD-12-KMR-A10 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.

This receiver is constructed from 100% aluminum for durability and strength, and it features hardcoat anodizing for an anti-reflective, corrosion-resistant finish. Additionally, the KeyMod mounting slots on seven sides plus a continuous Picatinny rail provide ample space for your favorite accessories.

Note: Does not include a bolt carrier group or charging handle.


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