The High-Caliber Weapons Used by Army Rangers for Long-Range Precision

Modern military units rely on a range of high-caliber weapons designed for precision, power, and adaptability. Among these are long-range rifles and support weapons capable of engaging targets well beyond the reach of standard infantry firearms.

While some systems are purpose-built for extreme distance, others balance versatility with stopping power, allowing soldiers to operate effectively across different mission types. These weapons highlight how caliber, velocity, and design all play a role in real-world performance.

Here’s a closer look at the high-caliber weapons associated with Army Rangers and how they are used in modern operations.

31. Colt M16A2

Weapon type: Assault rifle
Year entered service: 1983
Country of origin: United States
Manufacturer: Colt Defense
Caliber of ammunition and feed: 5.56x45mm NATO, 30-round detachable box magazine
Firing action: Gas-operated; semi-automatic; select-fire
Maximum effective range: 1,969 ft.

30. Colt M16A4

Weapon type: Automatic assault rifle
Year entered service: 1990
Country of origin: United States
Manufacturer: Colt Manufacturing
Caliber of ammunition and feed: 5.56×45 NATO, 30-round detachable box magazine
Firing action: Gas-operated, semi-automatic, select fire
Maximum effective range: 1,968 ft.

29. Colt M4

Weapon type: Assault carbine
Year entered service: 1994
Country of origin: United States
Manufacturer: Colt Manufacturing / Remington Arms
Caliber of ammunition and feed: 5.56x45mm NATO, 20- or 30-round detachable box
Firing action: Gas-operated; semi/full-automatic; locking bolt
Maximum effective range: 1,640 ft.

28. Colt M4A1 SOPMOD

Weapon type: Carbine rifle with special forces modification kit
Year entered service: 1993
Country of origin: United States
Manufacturer: Colt Firearms / Knights Armament
Caliber of ammunition and feed: 5.56x45mm NATO, 30-round detachable box magazine
Firing action: Gas-operated; rotating bolt
Maximum effective range: 1,968 ft.

27. Fabrique Nationale Mk 46 LWMG

Weapon type: Light weight machine gun
Year entered service: 2003
Country of origin: United States
Manufacturer: Fabrique Nationale
Caliber of ammunition and feed: 5.56x45mm NATO, Disintegrating Belt Feed
Firing action: Gas-operated; open bolt; full-automatic
Maximum effective range: 2,625 ft.

26. ST Kinetics Ultimax 100

Weapon type: Light machine gun
Year entered service: 1982
Country of origin: Singapore
Manufacturer: Chartered Industries of Singapore
Caliber of ammunition and feed: 5.56x45mm NATO, 20- or 30-round box magazine or 100-round drum
Firing action: Gas-operated; rotating bolt
Maximum effective range: 3,280 ft.

25. Navy Mark 12 Special Purpose Rifle (Mk 12 SPR)

Weapon type: Sniper rifle / designated marksman rifle
Year entered service: 2002
Country of origin: United States
Manufacturer: Colt Firearms
Caliber of ammunition and feed: 5.56x45mm NATO, 20- or 30-round detachable box magazine
Firing action: Gas-operated, rotating bolt
Maximum effective range: 1,800 ft.

24. Fabrique Nationale FN SCAR (Mk 16 / Mk 17)

Weapon type: Automatic assault rifle
Year entered service: 2009
Country of origin: United States
Manufacturer: Fabrique Nationale
Caliber of ammunition and feed: 5.56x45mm NATO, 7.62x51mm NATO, 20-(mk 17) or 30-round (mk 16) box magazine
Firing action: Gas-operated; rotating bolt
Maximum effective range: 1,640 ft.

23. Fabrique Nationale M240

Weapon type: General purpose machine gun
Year entered service: 1977
Country of origin: United States
Manufacturer: FN Manufacturing
Caliber of ammunition and feed: 7.62x51mm NATO, Disintegrating metal link feed of various counts
Firing action: Gas-operated; open-bolt; belt-fed; full-automatic
Maximum effective range: 5,905 ft.

22. Fabrique Nationale M249 SAW / LMG

Weapon type: Light machine gun
Year entered service: 1984
Country of origin: United States
Manufacturer: FN Manufacturing
Caliber of ammunition and feed: 5.56x45mm NATO, 7.62x51mm NATO, 30-round detachable box; 200-round metal link belt
Firing action: Gas-operated; open bolt
Maximum effective range: 2,600 ft.

21. Fabrique Nationale Mk 48 LWMG

Weapon type: Light weight machine gun
Year entered service: 2003
Country of origin: United States
Manufacturer: Fabrique Nationale
Caliber of ammunition and feed: 7.62x51mm NATO, Disintegrating belt
Firing action: Gas-operated; open bolt; belt-fed
Maximum effective range: 2,624 ft.

20. Heckler & Koch HK G28

Weapon type: Designated marksman rifle
Year entered service: 2006
Country of origin: Germany
Manufacturer: Heckler & Koch
Caliber of ammunition and feed: 7.62x51mm NATO, 10- or 20-round detachable box magazine
Firing action: Gas-operated; semi-automatic
Maximum effective range: 2,000 ft.

19. Johnson LMG

Weapon type: Squad support weapon
Year entered service: 1941
Country of origin: United States
Manufacturer: Cranston Arms Company
Caliber of ammunition and feed: 30-06 Springfield, 25-round detachable box
Firing action: Short recoil operated, single-shot, full-automatic
Maximum effective range: 2,300 ft.

18. M110 SASS

Weapon type: Designated marksman rifle
Year entered service: 2007
Country of origin: United States
Manufacturer: Knight's Armament
Caliber of ammunition and feed: 7.62x51mm NATO, 10- or 20-round detachable box magazine
Firing action: Gas-operated, rotating bolt
Maximum effective range: 2,624 ft.

17. Mk 14 Mod 0 EBR

Weapon type: Designated marksman rifle
Year entered service: 2004
Country of origin: United States
Manufacturer: Smith Enterprises
Caliber of ammunition and feed: 7.62x51mm NATO, 20-round detachable box magazine
Firing action: Gas-operated, rotating bolt, semi-automatic
Maximum effective range: 1,500 ft.

16. Remington M40

Weapon type: Bolt-action sniper rifle
Year entered service: 1966
Country of origin: United States
Manufacturer: Remington Arms
Caliber of ammunition and feed: 7.62x51mm NATO, .308 Winchester, 5-round integral box magazine, 5-round detachable box magazine
Firing action: Bolt-action, rotating bolt
Maximum effective range: 3,280 ft.

15. Saco M60

Weapon type: General purpose machine gun
Year entered service: 1957
Country of origin: United States
Manufacturer: Saco Defense
Caliber of ammunition and feed: 7.62x51mm NATO, Disintegrating link belt of various counts
Firing action: Gas-operated open bolt
Maximum effective range: 3,280 ft.

14. Saco M60E3

Weapon type: Light machine gun
Year entered service: 1986
Country of origin: United States
Manufacturer: Saco Defense
Caliber of ammunition and feed: 7.62x51mm NATO, 100-round disintegrating link belt
Firing action: Air-cooled, gas-operated, disintegrating metallic link-belt
Maximum effective range: 3,600 ft.

13. Stoner SR-25

Weapon type: Designated marksman rifle
Year entered service: 1990
Country of origin: United States
Manufacturer: Knights Armament
Caliber of ammunition and feed: 7.62x51mm NATO, 10- or 20-round detachable box magazine
Firing action: Gas-operated; rotating bolt; semi-automatic
Maximum effective range: 2,625 ft.

12. McMillan TAC-338

Weapon type: Sniper rifle
Year entered service: 2005
Country of origin: United States
Manufacturer: McMillan Tactical Products
Caliber of ammunition and feed: .338 Lapua Magnum, .338 Norma Magnum, 5-round magazine
Firing action: Manually-actuated bolt action
Maximum effective range: 5,250 ft.

11. Remington M24 SWS

Weapon type: Bolt-action sniper rifle
Year entered service: 1987
Country of origin: United States
Manufacturer: Remington Arms
Caliber of ammunition and feed: 7.62x51mm NATO; .338 Lapua Magnum, 5-round internal magazine / 5- or 10-round detachable box magazine
Firing action: Manually-operated bolt-action
Maximum effective range: 2,624 ft.

10. Beretta M9

Weapon type: Semi-automatic pistol
Year entered service: 1990
Country of origin: United States
Manufacturer: Beretta
Caliber of ammunition and feed: 9x19mm Parabellum, 15-round detachable box magazine
Firing action: Semi-automatic, single / double-action pistol
Maximum effective range: 164 ft.

9. Glock 19

Weapon type: Semi-automatic service pistol
Year entered service: 1988
Country of origin: Austria
Manufacturer: Glock
Caliber of ammunition and feed: 9×19 parabellum, 15-round detachable box
Firing action: Short-recoil / double-action
Maximum effective range: 165 ft.

8. SIG-Sauer P226

Weapon type: Semi-automatic handgun
Year entered service: 1984
Country of origin: Switzerland
Manufacturer: SIG-Sauer
Caliber of ammunition and feed: 9×19 parabellum, 12-, 13-, 15-, 17-, 18-, or 20-round detachable box magazine
Firing action: Semi-automatic; short-recoil; double-action
Maximum effective range: 165 ft.

7. SIG-Sauer P228

Weapon type: Semi-automatic service pistol
Year entered service: 1988
Country of origin: Switzerland
Manufacturer: SIG-Sauer
Caliber of ammunition and feed: 9×19 parabellum, 13-round detachable box magazine
Firing action: Semi-automatic; recoil-operated
Maximum effective range: 165 ft.

6. Steyr GB

Weapon type: Semi-automatic pistol
Year entered service: 1974
Country of origin: Austria
Manufacturer: Steyr-Daimler-Puch
Caliber of ammunition and feed: 9×19 parabellum, 18-round box
Firing action: Delayed-blowback
Maximum effective range: 147 ft.

5. Colt M1911

Weapon type: Semi-automatic service pistol
Year entered service: 1911
Country of origin: United States
Manufacturer: Colt Firearms
Caliber of ammunition and feed: .45 ACP, 7-round detachable box magazine
Firing action: Single-action; short recoil-operated
Maximum effective range: 82 ft.

4. Colt M45 MEU (SOC)

Weapon type: Special forces semi-automatic service pistol
Year entered service: 1986
Country of origin: United States
Manufacturer: Colt Manufacturing
Caliber of ammunition and feed: .45 ACP, 7-round box magazine
Firing action: Semi-automatic; recoil-operated
Maximum effective range: 165 ft.

3. Barrett M107

Weapon type: Anti-materiel / anti-personnel sniper rifle
Year entered service: 2008
Country of origin: United States
Manufacturer: Barrett Firearms Company
Caliber of ammunition and feed: .50 BMG (12.7x99mm NATO), 10-round detachable box magazine
Firing action: Recoil operated, rotating bolt, semi-automatic
Maximum effective range: 1,850 ft.

2. Browning M2

Weapon type: Heavy machine gun
Year entered service: 1921
Country of origin: United States
Manufacturer: Saco Defense Industries
Caliber of ammunition and feed: .50 BMG, 12.7x99mm NATO, 110-round metallic link belt
Firing action: automatic short recoil-operated, air-cooled
Maximum effective range: 6,560 ft.

1. RAI Model 300 / Model 500 (Haskins Rifle)

Weapon type: Bolt-action sniper rifle
Year entered service: 1983
Country of origin: United States
Manufacturer: Jerry Haskins / Research Armament
Caliber of ammunition and feed: 12.7x99mm NATO, 7.62x51mm NATO, 8.58x71mm, 4- or 5-round detachable box magazine
Firing action: Manually-actuated bolt-action system
Maximum effective range: 4,265 ft.