CODE 03-132-001
NAME – Mk 18 Mod 0 Carbine
COMMON NAMES – Mk 18 Mod 0 CQCW [Close Quarter Combat Weapon]
COUNTRY OF ORIGIN – USA
DATE OF MANUFACTURE – 2001
CALIBER – 5.56x45mm Nato
OVERALL LENGTH – 70.5 cm (26.75 in) Stock retracted, 76.2 cm (30 in) Stock extended
OVERALL LENGTH WITH SUPPRESSOR MOUNTED – 82.2 cm (32.36 in) Stock collapsed, 87.9 cm (34.61 in) Stock extended
BARREL LENGTH – 23.2 cm (10.3 in) without flash hider
SUPPRESSOR LENGTH – 16.5 cm cm (6.5 in)
SUPPRESSOR DIAMETER – 3.8 cm (1.5 in)
RIFLING (TYPE & TWIST) – 6 Groove, Right-hand twist, 1 turn in 17.8 cm (7 in)
LOAD – Mk 262 Mod 1 Full jacketed Open Tip Boat Tail (OTBT)
BULLET DIAMETER – 5.69 mm (0.224 in)
BULLET WEIGHT – 4.99 g (77 grains)
MUZZLE VELOCITY – 779 m/s (2556 fps)
MUZZLE ENERGY – 1515 j (1117 ft/lb)
WEIGHT (EMPTY) – 2.98 kg (6 lb 9 oz)
WEIGHT (LOADED) – 4.08 kg (9 lb) with Backup Rear Sight, ECOS-N sight, VBL II Illuminator, Front Vertical Pistol Grip, loaded with 30 rounds Mk 262 Mod 1 Special Ball
WEIGHT (LOADED) WITH SUPPRESSOR – 4.70 kg (10 lb 6 oz) with NT4 Suppressor, Backup Rear Sight, ECOS-N sight, VBL II Illuminator, Front Vertical Pistol Grip, loaded with 30 rounds Mk 262 Mod 1 Special Ball
SUPPRESSOR WEIGHT – 0.62 kg (1 lb 6 oz)
SUPPRESSOR MOUNTING – Attaches to M4QD Flash hider
SUPPRESSOR OPERATION – Two-stage, expansion chamber, baffle stack
SUPPRESSOR DECIBLE REDUCTION – Minus 28 db from @160 db
SIGHTS – No integral sights, may mount Backup Rear Sight in place of or with optical sights
BACKUP REAR SIGHT WEIGHT – 0.11 kg (4 oz)
Enhanced Combat Optical Sight – Navy (ECOS-N) WEIGHT – 0.20 kg (7 oz)
FRONT VERTICAL PISTOL GRIP WEIGHT – 0.11 kg (4 oz)
Visible Bright Light (VBL) II WEIGHT – 0.20 kg (7 oz)
EFFECTIVE RANGE – 500 m (547 yards)
OPERATION – Gas impingement
TYPE OF FIRE – Selective, Semi and Full automatic
RATE OF FIRE – 45 rpm Semi, 90 rpm, Full, 12-15 rpm Sustained
CYCLIC ROF – 700 to 970 rpm
FEED DEVICE – 20 or 30 round aluminum magazine, double column, double feed
FEED DEVICE WEIGHT (EMPTY) – 20 rd – 0.080 kg (2.83 oz), 30-rd – 0.110 kg (4 oz)
FEED DEVICE WEIGHT (LOADED) – 20-rd – 0.33 kg (12 oz) loaded with 20 rds Mk 262 Mod 1, 30-rd – 0.48 kg (1 lb 1 oz) loaded with 30 rds Mk 262 Mod 1
BASIC AMMUNITION LOAD – Seven 30-rd magazines (210 rounds)
LOAD WEIGHT – 3.36 kg (7 lb 7 oz)
MANUFACTURER – Navy Special Warfare Center, Crane Division, Crane Indiana (Developer), Colt Manufacturing Company LLC, Hartford, Connecticut
STATUS – Production
SERVICE – US Navy Special Warfare, Special Operations units
