Product Details

The Bear Creek Arsenal Complete Upper Assembly has a 16" m4 contour barrel made out of 4150 chrome moly vanadium steel with 1:7 twist rate and a  mid-length gas system. The assembly includes a 15" M-LOK rail, an m4 flat top forged upper receiver with forward assist, a BCA bolt carrier group, birdcage flash hider and charging handle. It is chambered in 5.56 NATO and machined with M4 feed ramps in barrel extension.

  • 16" M4 Contour Barrel
  • 4150 Chrome Moly Vanadium
  • Parkerized Finish
  • 1:7 Twist
  • 15" MLOK
  • 5.56 NATO Caliber
  • M4 Flat Top Upper Receiver
  • Mid Length Gas System,
  • BCA Standard BCG
  • Charging Handle
  • Bird Cage Flash Hider
The BCA upper assembly, like all BCA products, is subjected to numerous QA/QC checks which for BCA's firearms and upper receiver assemblies includes test firing prior to approval and shipment. This upper assembly is also backed by the BCA limited lifetime warranty

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Category Gun Parts
Caliber 223/5.56
Manufacturer SKU 625-UA556MM41617P-15MLOK3
UPC 11122233731
Condition New
Manufacturer Bear Creek Arsenal
Barrel Length 16"
Twist 1:7
Color Black
Rail M-Lok

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