COMMON NAMES – Colt Model 927, M16A2 Carbine, M4A1 SOPMOD Block I
COUNTRY OF ORIGIN – USA
DATE OF MANUFACTURE – 1991
CALIBER – 5.56x45mm Nato
OVERALL LENGTH – 75.6 cm (29.75 in) stock collapsed, 83.8 cm (33 in) stock fully extended
BARREL LENGTH – 36.8 cm (14.5 in) with flash suppressor, 39.4 cm (15.5 in) with flash suppressor
RIFLING (TYPE & TWIST) – 6 Groove, Right-hand twist, 1 turn in 17.8 cm (7 in)
LOAD – M855 Full metal jacket with steel core penetrator
BULLET DIAMETER – 5.69 mm (0.224 in)
BULLET WEIGHT – 4.02 g (62 grains)
MUZZLE VELOCITY – 910 m/s (2985 fps)
MUZZLE ENERGY – 1663 j (1227 ft/lb)
WEIGHT (EMPTY) – 2.92 kg (6 lb 7 oz) with round handguards
WEIGHT (EMPTY) – 3.54 kg (7 lb 13 oz) with mounted M4 Adapter Rail System
WEIGHT (LOADED) – 4.25 kg (9 lb 6 oz) with M4 Adapter Rail System, Backup rear sight, Front vertical pistol grip, loaded with 30 rds M855 Ball
SIGHTS – Mil-Std 1913 rail along top of receiver, Removable (rear) open, iron, adjustable sights, Front sight – Square post, adjustable for zero, Rear sight (back up) folding aperture peep, zero for 300 m (328 yards).
Removable Carrying handle/Sight Assembly – fits Mil-Std 1913 rail, Rear sight only – Leaf-type flip apertures, adjustable for windage, Battle aperture (short range) 0-200 meters (0-219 yards), Long range aperture adjustable from 300 to 800 meters in 100 meter increments (328 to 875 yards in 109 yards increments)
BACKUP REAR SIGHT WEIGHT – 0.12 kg (14 oz)
HANDLE/SIGHT ASSEMBLY WEIGHT – 0.59 kg (1 lb 5 oz)
FRONT VERTICAL PISTOL GRIP WEIGHT – 0.11 kg (4 oz)
EFFECTIVE RANGE – 600 m (656 yards)
OPERATION – Gas impingement
TYPE OF FIRE – Selective, Semi and Full automatic
RATE OF FIRE – 45 rpm Semi, 90 rpm Full auto, 12 to 15 rpm sustained rate
