- SR-25
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- For State Route 25 or State Road 25, see list of highways numbered 25.
SR-25 
Mk 11 Mod 0Type Sniper rifle Place of origin 
United StatesService history In service 1990-present Used by See Users Wars Afghanistan War, Iraq War, 2006 East Timorese crisis, 2nd Intifada Production history Designer Eugene Stoner Manufacturer Knight's Armament Company Variants SR-25 Enhanced Match rifle, with 20 in (510 mm) barrel SR-25 Enhanced Match Carbine, with 16 in (410 mm) barrel and M110 flash suppressor
Specifications Weight Match Rifle 10.75 lb (4.88 kg),
LwMatch 9.5 lb (4.3 kg),
Carbine 7.5 lb (3.4 kg),
Sporter 8.75 lb (3.97 kg)Length 1,118 mm (44.0 in) Barrel length Match Rifle 24 in (610 mm) (also LwMatch & Sporter 20 in/510 mm, Carbine 16 in/410 mm)
Cartridge 7.62×51mm NATO Action Gas-operated, rotating bolt Rate of fire Semi-automatic Feed system 10 and 20-round detachable box magazine The SR-25 (Stoner Rifle-25)[1] is a semi-automatic sniper rifle designed by Eugene Stoner and manufactured by Knight's Armament Company.[1] The SR-25 uses a rotating bolt and a direct impingement gas system. It is loosely based on Stoner's AR-10, rebuilt in its original 7.62×51mm NATO caliber. Up to 60% of parts of the SR-25 are interchangeable with the AR-15 and M16—everything but the upper and lower receivers, the hammer, the barrel assembly and the bolt carrier group.[1] SR-25 barrels were originally manufactured by Remington Arms with its 5R (5 grooves, rounded) rifling, with twist 1:11.25 (1 complete turn in 11.25 inches / 286 millimetres). The heavy 20 in (510 mm) barrel is free-floating, so handguards are attached to the front of the receiver and do not touch the barrel.
Contents
Design
The SR-25 enhanced match rifle utilizes the newer URX II Picatinny-Weaver rail system, rather than the older Mk 11 free-floating RAS, on the top of the receiver to accept different scope mounts or a carrying handle with iron sights (front sight mounted on the rail located on the forward end of the non-modular handguard).[2] The match version is designed to shoot at a precision of 0.5 minute of arc, which corresponds to 0.5-inch (13 mm) groups at 100 yards (91 m).
The Mk 11 Mod 0 system comes in 7.62 mm NATO caliber, and is designed for match-grade 7.62×51mm NATO ammunition. The Mk 11 system includes the rifle, 20 round box magazines, QD (Quick Detachable) scope rings, Leupold Mark 4 Mil-dot riflescope, Harris swivel-base bipod on a Knight's mount, and QD sound suppressor, which is also manufactured by Knight's Armament Co.[1] Flip-up BUIS (Back up iron sights) are attached to the modified gas block and upper receiver.
The Mk 11 Mod 0 utilizes an Obermeyer 20 in (510 mm) match target barrel, along with a RAS (Rail Accessory System) fore-end made by KAC, consisting of an 11.35 in (288 mm) long match fore-end. The RAS allows for quick attachment/detachment of MIL-STD-1913 components. The aluminum fore-end makes no contact with the barrel forward of the receiver, allowing for extreme accuracy. The Mk 11 Mod 0 has an empty weight of 15.3 lb (6.9 kg), and an overall length of 45.4 in (115 cm). The civilian version, using the longer 24 in (610 mm) match barrel, is guaranteed to produce groupings of less than 1 in (25 mm) at 100 yd (91 m), or 0.3 angular mil, using factory match loads.
The new SR-25 Enhanced Match (E.M.) Carbine is very similar to the KAC M110 Semi-Automatic Sniper System,[2] though the M110 utilizes the newer URX Rail system, a length-adjustable fixed buttstock, and an integrated flash suppressor. Starting late 2011, USMC snipers will replace Mk11 Mod 0 rifles with the M110 Semi-Automatic Sniper System on a one-for-one basis.
Gallery
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Israeli Defense Forces SR-25 with sound suppressor attached.
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A U.S. Marine general fires the Mk 11.
Users
Australia: Australian Army[3] and Police Tactical Groups.[4]
Greece: EKAM special forces.[5]
Israel: IDF special forces.[6]
Poland: GROM.[7]
Thailand: Royal Thai Army.[8]- United States: United States Military.[9]
See also
- United States Navy Mark 12 Mod X Special Purpose Rifle
- List of individual weapons of the U.S. Armed Forces
References
- ^ a b c d Max R. Popenker. "Knights SR-25, Mk.11 Mod.0 and XM110 sniper rifle (USA)". http://world.guns.ru/sniper/sn13-e.htm. Retrieved 2010-06-27.
- ^ a b "SR-25 EM SERIES". Knight's Armament Company. http://www.knightarmco.com/sr25.html. Retrieved 2010-06-27.
- ^ http://www.army.gov.au/stayarmy/Sniper.asp
- ^ http://www.responseaustralia.net/issues/Issue08.pdf
- ^ "Greece Ministry of Public Order Press Office: Special Anti-Terrorist Unit". http://astynomia.gr - Official Website of the Hellenic Police. July 2004. http://www.astynomia.gr/images/stories/DOCS/Attachment11480_ENHMEROTIKO_EKAM_ENGL.pdf. Retrieved 2009-10-13.
- ^ http://www.isayeret.com
- ^ Wilk (REMOV), Remigiusz. "Nowe gromy GROM". http://www.altair.com.pl/cz-art-1660.
- ^ http://topicstock.pantip.com/rajdumnern/topicstock/2010/04/P9190213/P9190213.html
- ^ Jones, Richard D. Jane's Infantry Weapons 2009/2010. Jane's Information Group; 35th edition (January 27, 2009). ISBN 978-0-7106-2869-5.
External links
Current U.S. infantry weapons and cartridgesHandguns Rifles Shotguns Submachine guns Machine guns Grenade launchers Mortars Rockets Missiles Cartridges 12-gauge · 9×19mm NATO · .45 ACP · 5.56×45mm NATO · 7.62×51mm NATO · .300 Winchester Magnum · .50 BMG · 40×46mm & 40×53mmAR-10 • AR-15 • AR-57 • AR-831 • C7/C8 • CAR • CAR-15 • CM901 • Colt 9mm SMG • CQ • CQBR • GPC • HK416 • HK417 • LR300 • MSSR • M110 • M16 • M16K • M231 • M27 • M4 • M4A2/A3 • M6 • M468 • OA-93 • REC7 • Recon Rifle • SDM-R • SAM-R • Shrike • SOAR • SPR • SR-25 • SR-47 • SR-556 • T-14 • T-15 • T-16 • T-17 • T65 • T86 • T91
Categories:- 7.62 mm firearms
- Infantry weapons of Australia in active service
- Semi-automatic rifles
- Sniper rifles of the United States
- United States Coast Guard weapons
- United States Marine Corps equipment
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