NEW YORK COMPLIANT – BILLET MATCH Set 16″ AR15 5.56 Rifle – 15″ ODIN Handguard – ARCHANGEL ARMS
Colt CR6920 M4 Carbine AR-15 5.56 NATO Semi Auto Rifle 16.1" Barrel 30 Rounds A2 Front Sight Polymer Hand Guard Collapsible Stock Matte Black - Duke's Sport Shop, Inc.
AR-15 COLT 6920CK upper on an Aero-Precision M4 clone - Top Gun Weapons
What's the Difference?]: AR-15 vs M4 - Pew Pew Tactical