AERO PRECISION M4E1 Threaded 20" 5.56 Complete Upper Receiver w/ ATLAS R-ONE Handguard
$449.99
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Includes: M4E1 Threaded Assembled Upper Receiver ATLAS R-ONE Handguard of choice 20" 5.56 Rifle Length CMV Barrel Low Profile Gas Block and Rifle Length Gas Tube Product comes assembled This complete upper does not include BCG or Charging Handle. 20" 5.56 Rifle Length CMV Barrel Features: 5.56 NATO 20" Rifle Length, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled .750 gas block journal Government Profile Rifle length gas system, .0785 gas port M4 Feed Ramp Extension HP and MPI tested Standard A2 flash hider
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