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Small arms1966–present
Sniper rifle
M40 rifle is a sniper rifle originating in United States. Reported operators include United States.
Sniper rifle
United States
1966–present
United States
Vietnam War Lebanese Civil War Invasion of Grenada Gulf War War in Afghanistan Iraq War
Remington Arms
1966
1966–present
M40A1 M40A3 M40A5
M40A1: 6.57 kg (14.48 lb) M40A3: 7.5 kg (16.5 lb)
M40A1: 1,117 mm (43.97 in) M40A3: 1,124 mm (44.25 in)
635 mm (25 in) (1:12 right hand twist) M40A1: Hart (6 lands and grooves) M40A3: Schneider Match Grade SS No. 7 (6 lands and grooves)
7.62×51mm NATO
Bolt action
777 m/s (2,550 ft/s) (w/175 gr. M118LR)
800 meters/875 yards
5-round integral box magazine (M40, M40A1, M40A3) 10-round removable box magazine (M40A5)
Scout Sniper Day Scope (SSDS)—Schmidt and Bender PM II 3–12×50.
Afghanistan
Malaysia
Philippines
United States
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Reference text from Wikipedia contributors, used under CC BY-SA 4.0.
True scale
Sourced dimensions beside a 1.75 m human reference.
Points represent sourced observations, including revisions. Revisions on the same effective date are not separate inventory events. Ranges appear in the table and are not plotted as exact points.
| Observation / report period | Value | Source | Claim state |
|---|---|---|---|
| 28 Sept 2026 | 1.117 m | Wikipedia contributors | superseded |
M40 rifle equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.