Mark I Lewis Gun

CODE – 04-131-914

NAME – Mark I Lewis Gun

NAME (NATIVE) – Gun, Lewis, .303-Inch, Mark I

COMMON NAMES – Model 1914 Lewis Gun

COUNTRY OF ORIGIN – Great Britain

DATE OF MANUFACTURE – 1914

CALIBER – 7.7x56mmR (.303 British)

OVERALL LENGTH – 103.2 cm (40.63 in) with stock removed, 128.6 cm (50.63 in) with stock attached

BARREL LENGTH – 66.7 cm (26.25 in)

RIFLING (TYPE & TWIST) – 4-Groove, Left-hand twist, 1 turn in 25.4 cm (1 turn in 10 in)

LOAD – Mk VII Composite Jacketed Spitzer

BULLET DIAMETER – 7.90 mm (0.311 in)

BULLET WEIGHT – 11.34 g (175 grains)

MUZZLE VELOCITY – 747 m/s (2450 fps)

MUZZLE ENERGY – 3163 j (2333 ft/lb)

WEIGHT (EMPTY) – 11.79 kg (26 lb)

WEIGHT (LOADED) – 13.73 kg (30 lb 4 oz) loaded with 47-round Mk VII Ball

WEIGHT (MOUNTED) – 16.56 kg (36 lb 8 oz) On Mk I Bipod, loaded with 47-round Mk VII Ball

TYPE OF MOUNT – Light Folding Field Mount (Mk I Bipod)

WEIGHT OF MOUNT – 2.83 kg (6 lb 4 oz)

SIGHTS – Open, iron, adjustable – Front sight – Blade, Rear sight – Screw-ladder type with aperture, Graduated from 183 to 1829 m in 91 m increments (200 to 2000 yards in 100 yard increments)

EFFECTIVE RANGE – 805 m (880 yards)

OPERATION – Gas-operated, fires from open bolt

TYPE OF FIRE – Full automatic only

RATE OF FIRE – 100-140 rpm

CYCLIC ROF – 550 rpm

FEED DEVICE – 47-round pan-type drum magazine

FEED DEVICE WEIGHT (EMPTY) – 0.77 kg (1 lb 11 oz)

FEED DEVICE WEIGHT (LOADED) – 1.94 kg (4 lb 4 oz) with 47 round Mk VII Ball

BASIC AMMUNITION LOAD – 64 magazines (in Carriers/Boxes) (3008 rounds)

MAGAZINE CARRIER (BAG) WEIGHT (EMPTY) – 0.45 kg (1 lb)

MAGAZINE BOX WEIGHT (EMPTY) – 7.82 kg (8 lb 8 oz)

MAGAZINE BOX WEIGHT (FULL) – 24.24 kg (53 lb 7 oz) four magazines each in two carriers (8 magazines total)

LOAD WEIGHT – 193.92 kg (427 lb 8 oz)

MANUFACTURER – Birmingham Small Arms Co. Ltd., Birmingham, England

STATUS – Obsolete

SERVICE – British military forces

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