16" Upper Receiver Group w/ FSB and Barrel Nut View larger

16" Upper Receiver Group w/ FSB and Barrel Nut

New product

This upper receiver group is perfect for those wanting to install a free float rail that uses a USGI barrel nut without having to remove the delta ring assembly or hand guard end cap. All upper receiver groups are test fired prior to shipping.

More details

Ships in 4 to 6 weeks

$419.95

  • None
  • USGI (+$19.95)
  • Medium Contour Chrome-Lined
  • Lightweight Chrome-Lined
  • Yes (+$170.95)
  • No

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More info

This Upper Receiver Group is based on our base model carbine with the Mid-Length gas system.  It features our premium barrel and standard M4 Flat Top Upper Receiver.


Configuration: M4 Style Carbine
Upper Receiver: 7075 T6 with M4 Feed Cuts and T-Markings
Barrel: 16” Medium Weight Contour, CMV 4150, 5.56 NATO Chamber, 1:8, Chrome Lined Barrel and Chamber, Air-Gauged, Radiograph and MP Inspected
Gas System: Mid-Length, Direct-Impingement 
Front Sight: F-Marked Front Sight Base
Muzzle Device: A2 Flash Suppressor

*This upper receiver group does NOT include a delta ring assembly or hand guard end cap

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16" Upper Receiver Group w/ FSB and Barrel Nut

16" Upper Receiver Group w/ FSB and Barrel Nut

This upper receiver group is perfect for those wanting to install a free float rail that uses a USGI barrel nut without having to remove the delta ring assembly or hand guard end cap. All upper receiver groups are test fired prior to shipping.