Complete built upper receiver:

  • M4 stainless steel, 4150 chrome vanadium lined barrel, chambered in .223 wylde with a 1:7 twist
  • Stainless steel Birdcage flash hider
  • Carbine length gas system
  • 15″ m-lok handguard
  • Flat-top mil-spec upper receiver with installed dust cover and forward assist
  • No BCG or charging handle

Note: Barrel caliber may be 5.56 based on market availability.

Direct Link: https://3crtactical.com/product/ar-15-carbine-upper-16-223-wylde-stainless-steel-barrel-15-m-lok-rail/