MI Criterion Stainless 20inch Upper Receiver Group, MI-CRM15 M-LOK™.223 Wylde 1/8

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  • Forged 7075 T6 Aluminum Upper
  • Hard Coat Anodizing
  • T-Markings on Receiver
  • 20inch Criterion Stainless Barrel
  • 1/8 Twist
  • Chambered in .223 Wylde
  • Threaded 1/2x28
  • .750 Gas Block Diameter
  • M4 feedramps
  • Rifle-Length Direct Impingement Gas System
  • MI-CRM15" Combat Series M-LOK Handguard
  • MI A2 Flash Hider
Weight 4lb 4.9oz.
Overall Length 28.25"

Magpul® and M-LOK™ are trademarks of Magpul Industries Corp
Complete Upper Receiver groups do not come standard with charging handles and bolt carrier groups.


Be sure to inspect the complete upper before accepting the transfer. Any complete upper that has not been transferred will be eligible for return but may incur a restocking fee. NO returns of any complete uppers will be allowed once transferred to “you,” the buyer. ALL complete upper sales are final. Midwest Industries complete uppers are made right here in the USA and are covered under our limited lifetime warranty.

NOTE: Complete rifles, complete upper receivers, lower receivers, and any FFL-related items are NOT returnable once transferred and do not qualify for Free Shipping.