Standart caliber rifles
Austria
 Steyr SSG 69
 Steyr SSG 04
 Steyr SSG 08
 Steyr Scout Tactical
 Styria Arms CSR99
 Unique Alpine TPG-1
Belgium
 FN 30-11
 FN Police Rifle
 FN FNAR
Brazil
 IMBEL Fz.308
Canada
 Timberwolf C14
China (People Republic of)
 QBU-88
 JS 7.62
Czech Republic
 CZ 700
Finnland
 Saco TRG
France
 FR F2
 PGM Ultima Ratio
 PGM Mini-Hecate .338
Germany
 HK PSG-1
 HK MSG-90
 Walther WA2000
 Mauser SP66
 Mauser 86SR
 Mauser SR-93
 Blaser 93 Tactical
 DSR-1
 SSG-82
 Erma SR-100
 GOL-Sniper
 Keppeler KS-V new
Great Britain
 Enfield L42A1 & Enforcer
 Parker-Hale M82
 AI Arctic Warfare / L96
 AI AE
 RPA Rangemaster
Israel
 Galil sniper
 TEI M86-SR
Italy
 Beretta sniper
Poland
 "Alex" / "Bor"
Turkey
 MKEK JNG-90 "Bora"
USA
 Armalite AR10(t)
 Barret 98B
 CheyTac Intervention
 DT SRS new
 FN FNAR
 FN SPR
 Kel-tec RFB
 M21
 M24
 M40
 Mk.11 mod.0, M110, SR-25
 RAI / RAP model 300
 Remington 700
 Remington MSR new
 Savage 10FP & 110FP
 VR1 PSR
USSR / Russia
 Dragunov SVD
 SVU and SVU-A
 VSS
 SV-98
 SV-99
 VSK-94
 SVDK
 MTs-116M
 Lobaev SVL new
 OTs-48K new
Switzerland
 SIG SG550 Sniper
 Sig-Sauer SSG 2000
 Sig-Sauer SSG 3000
 SIG STR/SHR 970
 B+T APR 308
 B+T APR 338
Yugoslavia
 Zastava M76

all texts and some pictures
copyright © 1999-2010
by Max R. Popenker
and can not be used without author permission

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Knights SR-25, Mk.11 Mod.0 and XM110 sniper rifle (USA)

Knights SR-25 carbine, civilian version with 16" barrel and telescopic buttstock

US Navy / USMC Mark 11 Model 0 (Mk.11 Mod.0) sniper rifle system, with 10-round magazine, daylight telescope sight and bipod

US Navy / USMC Mark 11 Model 0 (Mk.11 Mod.0) sniper rifle system, with 20-round magazine, daylight telescope sight and installed quick-detachable sound suppressor

US Army XM110 Semi-Automatic Sniper Rifle (XM110 SASR), with daylight telescope sight, bipod and quick-detachable sound suppressor

The SR 25 rifle (Stoner Rifle, model 25) was developed by Reed Knight (owner of Knights Armament Co) and Eugene Stoner (designer of M16 and Stoner 63 rifles among other things) during early 1990s. In essence, the SR 25 was the AR-15 rifle scaled up to shoot 7,62x51 / .308 Win ammunition, with up to 60% of parts of new rifle being interchangeable with standard AR-15 components. This rifle sold well among civilian shooters who needed an accurate semi-automatic rifle in 7,62 / .308 caliber for hunting or target shooting. This rifle also found a favor among US Military - during early 1990s it was adopted by US Navy SEAL groups, as Mark 11 Model 0 sniper rifle system; use of Mk.11 Mod.0 rifle was later extended to US Marine Corps. Mark 11 Model 0 rifle system included the semi-automatic SR-25 rifle, a quick-detachable sound suppressor, also developed by Knights Armament Co, Leupold Vari-X Mil-dot telescope sight, Harris bipod, 20-round magazines and other necessary accessories. In 2005, a modified version of the SR-25 / Mk.11 rifle won US Army Semi-Automatic Sniper Rifle (XM110 SASR) competition, and today it is being issued to US Army snipers, in attempt to replace venerable M24 Sniper Weapon System. A certain controversy exists about this replacement, as some experts doubt that Knight's semi-automatic XM110 rifle could equal long-range accuracy of the bolt-action M24. However, Knights Armament Co claims that SR-25 is capable of 0.5 MOA accuracy with match ammo, and in the field Mk.11 or XM110 rifle can proved accurate and rapid fire out to 600 meters or even more, depending on particular circumstances and proficiency of operator. Use of quick-detachable silencer / sound moderator also has several benefits, the most obvious being concealment of the operator's position, as silencer decreases the sound of gunshot and completely eliminates muzzle flash. Another, less obvious benefit is that silencer also acts as an effective muzzle brake, decreasing recoil and thus permitting faster follow-up shots.

All rifles built on SR-25 platform share same basic action, which is based on AR-15 / M16 system. This is a gas-operated system with direct-impingement gas drive, which has no gas piston. Instead, powder gases are fed from the barrel and through a stainless-steel tube back into the receiver, and then into the cavity inside bolt carrier through the gas key. Inside the bolt carrier, powder gases push it back against the bolt, thus first causing the bolt to rotate and unlock from the barrel, and then to cycle the action. The rotary bolt has 7 radial lugs and improved extractor. Both upper and lower receiver halves are made from aircraft grade aluminum alloy, and connected by cross-pins. There is no "forward assist" button on the SR-25 rifles; the brass defelector is present. Barrels are of match class quality, and enclosed into free-floated forearm, fitted with Knights-made and designed Picatiny rails system. Because of AR-15-style recoil buffer, which extends rearwards fro the receiver, SR-15 cannot be fitted with folding buttstock; most rifles are fitted with fixed butt, while SR-25 carbines are fitted with telescoping buttstock. Trigger is also of match grade, fully adjustable.

Military versions of the SR-25, known as Mk.11 Mod.0 (USN / USMC) and XM110 (US Army) have some differences from civilian rifles. First of all, these rifles are fitted with proprietary sound moderator / silencer quick mount, located on the barrel just in front of the gas block. These rifles also finished to military specifications, and equipped with back-up iron sights (marked up to 600 meters and installed on folding bases). XM110 rifle also features a different buttstock, which is adjustable for length of pull, as well as different style forend rail system and a flash hider on the barrel. Military rifles are usually issued along with Harris bipod, Leupold variable-power 3,5-10X sniper scope, and a number of other accessories, including soft and hard carrying cases.

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