These are take offs from a gently used (less than 200 rounds) Colt and are basically brand spankin' new. They are carbine sized and double heatshielded.
I'll take $25 (obo) plus shipping. Paypal is fine (no fee).
I'd also take the following in trade:
Mil-Spec Receiver Extension Tube for an M4 Carbine
Magpul MOE Pistol Grip in FDE or Black
and partial trade for Magpul MOE Trigger guard in Black or FDE