It is complete with one Colt marked AR-15 magazine and a green web sling. As noted it has the early shiny all black plastic components. It is correctly marked with 'SAFE/SEMI/AUTO'. Farther back it is marked: 'COLTS PATENT FIREARMS MFG. 223 Remington & 5.56×45mm NATO 1:7: 1 right hand twist every 7 inches (178 mm) 5. 223 Remington (US M193) or 7.62×39mm 1:10: 1 right hand twist every 10 inches (254 mm) 9×19mm NATO 1:9: 1 right hand twist every 9 inches (229 mm). The side of the magazine well is roll-marked with the large Colt 'Rampant COLT/COLT' over, 'ARMALITE AR15/PATENTS PENDING/CAL.223/MODEL 01/SERIAL 000606'. 1:12: 1 right hand twist every 12 inches (305 mm). It also includes the early two-piece buffer assembly, early non-trap plastic buttplate and handguards. It also has the early machined selector switch with the small hole on each sides. It has all the very early unaltered features such as the very early, almost preproduction three prong flash hider, (not the Vietnam version), the non-chrome lined steel barrel that is unmarked, not even with the twist rate, the early all machined front sight base/gas system, all chromed bolt and bolt carrier assembly with the large headed cross-pin (that holds in the firing pin) and the very early really small charging handle with the short latch and wings on the sides. For purposes of these tables, bold model numbers are. This early example is serial number '606' and it was probably manufactured circa late 1963 or early 1964. The tables here are split in a variety of categories, and provide an overview of different subtypes. These were called the 'Model 01' and were in their own serial number range that identified it as an Armalite Rifle but manufactured by the Colt Firearms Company. Angry Gun COLT 723 / 733 M16 A2 CNC Upper & Lower Receiver for Marui TM MWS / MTR GBB ( Colt Licensed w/ Roll Marking Press ) Shipping calculated at. These early original Colt/Armalite fully automatic rifles are very rarely found on the open market today as very few were actually sold in the early production days, especially with the dual company markings, and most were later altered or upgraded. This is an excellent example of an original very early Colt/Armalite manufactured, fully automatic commercial M16 rifle.

M16 barrel markings