Colt M4 flat-top 6921HB/R0920 SOCOM heavy barrel 14.5″ used upper.
Features a flat-top upper receiver with forward asst., shell deflector, removable carryhandle with A2 sights, 14.5″ 1/7 SOCOM heavy barrel, flashhider, bayonet lug, M4 double heat-shield handguards, side sling swivel, Colt complete upper receiver assembly, all Colt.
This upper is a used factory assembled upper receiver fired with the barrel showing some minor heat discoloration. The throat erosion gauges 8.0 indicating that 80% of the barrel life is gone. The round count is unknown. The picture of the test-target shows that it still groups pretty well.
This upper does not include a bolt carrier group or charging handle.
Markings; upper receiver M4, C keyhole, carryhandle cardinal, rail numbers, barrel C MP 5.56 NATO 1/7, 10/06, O stamp, front sight F.
Price $395 Please call or email to order – 608 558-6201 or email@example.com