Selling a Colt AR-15 Sp1 upper. .223, 1 in 12 twist 20 inch bbl. Preban with bayonet lug. Original, all Colt upper from an Sp1 - A1 sights, triangular handguards. No B/C/CH. Receiver is marked CM, barrel is marked CMP Chrome Bore. Price is $225 shipped in the CONUS. Handguards are mint, bore looks excellent, like new.
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