Due primarily to its simplicity of operational characteristics as well as ease of maintenance and repair, the Rifle, .303 Calibre, Lee Enfield, No 4, All Marks, is used in limited numbers, as a personal defence weapon, by members of the following groups:
The Rifle, .303 Calibre, Lee Enfield, No 4, All Marks, is a heavy barrel, manually operated bolt action, magazine fed rifle, capable of firing single shots only. It fires rimmed cartridges from a detachable ten round magazine.
The No 4 series rifles were developed from the British forerunner, the Short Magazine, Lee Enfield Mark VI (SMLE). The Rifle, .303 calibre, Lee Enfield, No 4 Mk 1 appeared in 1931 as a refined production version of the No 1 rifle adapted from the SMLE. The Rifle, .303 calibre, No 4 Mk 1 was further redesigned for mass production as the Rifle, .303 calibre, Lee Enfield, No 4 Mk 1 * in 1939. This version of the rifle became standard issue for the British Commonwealth during World War II.
No 4, Mk 1 *
Canadian Arsenals Limited (CAL)
Year of Manufacture
113 cm (44-1/2 in.)
4.09 kg (9 lbs)
Seasoned Walnut, Beech or Birch
25.4 cm (10 in.)
0.34 kg (12 oz)
System of Operation
Manual Bolt Action
Positive Locking Bolt
743.71 mps (2 440 fps)
502.92 m (550 yds)
Rate of Fire
Up to 20 rds/min
Detachable 10 rd Magazine
Double action, locks both the bolt and the cocking piece.
Four sizes adjust bolt length to give correct headspace.
64 cm (25.19 in.)
7.65 to 7.72 mm (0.302 to 0.304 in.)
Number of Grooves
2, 5 or 6
1 turn in 25.4 cm (10 in.)
Direction of Twist
2 and 5 grooves – left hand 6 grooves – right hand
303 Mk VII ball or equivalent
Detachable, short, vertical box
12.7 mm (1/2 in.) increments
Mk 1 Vertical Leaf
Aperture sight, screw adjustable for ranges from 182.88 m to 1188.72 m (200 yd to 1 300 yd) W/battle sight. Mk 2 "L" Type Double aperture 274.32 m and 548.64 m (300 yd and 600 yd).
Mk 3 Vertical Leaf & C Mk 4
Aperture sight, slide W/click adjustment For ranges from 182.88 m to 1188.72 m (200 yd to 1 300 yd) W/battle sight.
Fixed Vertical Blade
-1.14 mm to +3.05 mm in 0.38 mm increments (-0.045 in. to +0/120 in. in 0.015 in. increments).