Colt keyhole M4 carbine upper receiver. Charcoal grey. C and keyhole (Cerro Forge) marked. Marked M4 at gas tube hole, has M4 feed ramps. Little wear, mostly from storage. Correct vintage for OIF/OEF clones. $175 shipped.
2. M16A3 flat top upper receiver. NOT cut for M4 feed ramps. Came on a USGI FN M16A4 upper assembly (per the last owner), but receiver has no FN markings. Nice quality upper, finish excellent match for USGI Colt/FN. $130 shipped.
C7 upper receiver. NOT cut for M4 feed ramps. Complete, excluding rear sight assembly. Nice upper for C7 or KISS build, little to no slop on assorted lowers. Test fit w/ USGI charging handle and BCG, everything is kosher. $125 shipped.
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