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NAME – 40x46mm XM688 Rocket Grapnel Launcher

NAME (COMMON) – XM688 Rocket

CALIBER – 40x46mmSR

TYPE – Weapon-launcher rocket propulsion motor for Grapnel

YEAR OF INTRODUCTION – 1970

COUNTRY OF ORIGIN – USA

IDENTIFYING COLOR CODE –Green or Brown cartridge case with black ink markings, unpainted projectile body with black ink markings

CASE TYPE – XM195 Semi-rimmed straight

CARTRIDGE LENGTH – 12.7 cm (5 in)

CASING LENGTH – 3 cm (1.18 in)

CASE HEAD DIAMETER – 41.2 mm (1.623 in)

CASE RIM DIAMETER – 43.60 mm (1.715 in)

PROJECTILE TYPE – Self-contained solid fuel rocket

PROJECTILE DIAMETER – 34.6 mm (1.36 in)

PROJECTILE WEIGHT – 0.185 kg (6.53 oz)

POWDER WEIGHT – 0.330 g (5.09 grains)

FILLER – Pressed black powder grains

FILLER WEIGHT – 0.10 kg (3.53 oz)

FUZE TYPE – None

CASING WEIGHT – 0.045 kg (1.5 oz)

TOTAL ROUND WEIGHT – 0.23 kg (8 oz)

NOMINAL BARREL LENGTH – 35.6 cm (14 in)

MAXIMUM RANGE – 53 to 69 m (175 to 225 feet) Horizontally, 43 to 50 m (140 to 165 feet) vertically

EFFECT – Provides propulsion for the XM-1 Grapnel hook, steel cable assembly, and up to 116 m (380 feet) of 8mm (0.315 in) nylon rope

STATUS – Evaluation

SERVICE – Field testing

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