This is an early AR type upper receiver with a pencil barrel and a large hole upper (no bolt, carrier or CH). It is a Colt chrome chamber and bore barrel and the upper receiver is not marked but is an Alcoa forging and it is in early Colt gray. I assume the barrel is either 1-12 or 1-10 twist. It has no forward assist, has the early type flat dust cover and an A1 flash hider. It also has an a different set of round handguards, with heat shields, that actually snap together when installed. The upper is in VG-excellent condition and the bore is shiny and rifling is sharp $300 shipped.
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