40x46mm XM681 Violet Smoke Canopy

NAME – 40x46mm XM681 Violet Smoke Canopy

NAME (COMMON) – XM681 Violet Smoke Canopy

CALIBER – 40x46mmSR

TYPE – Low velocity pyrotechnic daytime arboreal smoke marker

YEAR OF INTRODUCTION – 1968

COUNTRY OF ORIGIN – USA

IDENTIFYING COLOR CODE – Brown or Green anodized cartridge case with black ink lettering, light green projectile body with violet cap.

CASE TYPE – M195 Semi-rimmed straight

CARTRIDGE LENGTH – 13.43 cm (5.288 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 – Pyrotechnic carrier

PROJECTILE LENGTH – 10.95 cm (4.31 in)

PROJECTILE DIAMETER – 41.22 mm (1.623 in) at rotating band

PROJECTILE WEIGHT – 0.161 kg (5.68 oz)

POWDER WEIGHT – 0.330 g (5.09 grains)

FILLER – Violet smoke composition contained in a phenolic-coated kraft paper cylinder attached to a 50.8 cm (20 inch) diameter “X” type ribbon parachute with a length of beaded chain

FILLER WEIGHT – 0.059 kg (2.08 oz)

FUZE TYPE – Pyrotechnic, initiated on firing

FUZE DELAY – 8 seconds

CASING WEIGHT – 0.045 kg (1.5 oz)

TOTAL ROUND WEIGHT – 0.206 kg (7.27 oz)

MUZZLE VELOCITY – 76 m/s (250 fps)

NOMINAL BARREL LENGTH – 35.6 cm (14 in)

MAXIMUM RANGE – 91 m (300 feet) at 85⁰

EFFECT – Smoke charge burns for 90 seconds after ejection from projectile body creating a large cloud of violet smoke at treetop level

MANUFACTURER –

STATUS – Evaluation

SERVICE – US Military

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