ASmall arms
FORCETALLY
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ASmall arms
BSmall arms
Assault rifle Carbine Battle rifle Designated marksman rifle Semi-automatic rifle
At a glance
Mk 13 riflelarger figure on 2 of 2
SIG SG 550larger figure on 0 of 2
Counts only measures both sources give with the same scope. A larger figure is not a better system.
Measured figures
Length
Single source1207 mm (47.5")[source]
stock extended
Single sourceConfiguration
| Specification | Mk 13 rifle | SIG SG 550 |
|---|---|---|
| In service | 2001–present[source] | 1990–present[source] |
| Used by | United States[source] | See Users[source] |
| Wars | War in Afghanistan Iraq War[source] | War in Afghanistan (2001–2021) Sinai insurgency 2013 Lahad Datu standoff Yemeni Civil War (2014–present)[source] |
| Designer | Accuracy International / Remington Arms[source] | Schweizerische Industrie Gesellschaft |
stock folded
Single source1,000 mm (39.4 in) (stock extended) 772 mm (30.4 in) (stock folded)[source]
c
Single sourcec. 700 rounds/min[source]
Muzzle velocity
Single source911 m/s (2,989 ft/s)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| Variants | Mk 13 MOD 5 Mk 13 MOD 7[source] | See Variants[source] |
|---|
| Cartridge | .300 Winchester Magnum[source] | 5.56×45mm NATO 7.62×39mm (SG 553R, SG 556R & SIG563R) .300 AAC Blackout (SG 553 BK and SIG563 BK) 6.5mm Creedmoor (SG 750) 7.62×51mm NATO (SG 750 and SG 751)[source] |
|---|
| Calibre | .308[source] | — |
|---|
| Action | Bolt action[source] | Gas operated , rotating bolt[source] |
|---|
| Feed system | 5-round magazine (MOD 5)[source] | Proprietary 10-, 20-, 30-round box magazines (SG 550 series & SG 560 series) STANAG magazines (SIG 556 series, SG 560 series, SG 550 series (with STANAG mag well)) AKM -pattern magazines (SG 553R, SG 556R) SG 750 series magazines (SG 750 and SG 751)[source] |
|---|
| Sights | Nightforce Advanced Tactical Riflescope[source] | Rear: rotating diopter drum with tritium night inserts ; front: hooded post with folding night post 540 mm (21.3 in) sight radius (SG 550)[source] |
|---|
| Country of origin | United Kingdom[source] | — |
|---|
| Manufacturer | Accuracy International[source] | SIG Sauer AG (formerly Schweizerische Industrie Gesellschaft and Swiss Arms)[source] |
|---|
| Type | — | Assault rifle Carbine Battle rifle Designated marksman rifle Semi-automatic rifle[source] |
|---|
| Place of origin | — | Switzerland[source] |
|---|
| Designed | — | 1970s–1980s[source] |
|---|
| Produced | — | 1986–present[source] |
|---|
| No. built | — | 600,000[source] |
|---|