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M4A3 Mil-Contract Stripped Upper Receivers

Critical Capabilities

  • 6149
  • Save $ 351


These receivers are M4A3 mil-contract upper receivers. The finest upper receivers on the market, period.

Featuring:

  • Machined from 7075 aluminum forgings
  • M4 feed ramps
  • Marked 'M4' above gas tube inlet hole
  • Hard black-anodized finish
  • Milled T-marks

Add on an upper parts kit, complete forward assist and dust cover, and save. We'll install the upper kit for only $10, option available in drop-down menu. 


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