Colt 14.5″ M4 flat-top 6921HB SOCOM upper, used – SOLD

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.
Stock #1037804

Price $395     Please call or email to order – 608 558-6201 or

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