Draft:SR-15
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The SR-15 is an semi-automatic rifle designed by Eugene Stoner and manufactured by Knight’s Armament Company.
The SR-15 uses a direct impingement gas system, and feeds from box magazines, most of which are either the 20-round or 30-round. It is loosely based on Stoner ArmaLite AR-15, with 5.56x45mm NATO caliber. Most parts of the SR-15 are interchangeable with the AR-15 and M16, except the upper and lower receivers. SR-15 came with other parts such as URX 4 M-LOK handguard, E3 round-lug bolt, two-stage trigger, and 3-Prong Flash Eliminator. [1]
History
[edit]In May 2000, United States Special Operations Command took interest in the SR-25 and particularly its high magazine capacity and faster engagement time compared to bolt-action rifles. After some modifications, SOCOM adopted the SR-25 as the Mk 11 MOD 0. With the success of the SR-25, Knight's Armament started development of SR 25 in the AR-15 platform that has become SR 15 in 2007.[2]
Design
[edit]The SR-15E3 IWS Mod 1 has been heavily improved on dual-spring extractor. In the AR-15, there are Extractor problems often due to centrifugal force from the bolt rotates. Wider at the back for the dual-spring, the "E3" extractor's additional material adds weight to help balance the extractor's front part and prevent it from backing away from the cartridge-case rim during rotation.[3]
The SR-15E3 IWS Mod 2 improved on a two-stage drop-in trigger, along with an improved bolt-lug design that extend service life.[4]
References
[edit]- ^ Crane, D. (2010b, September 7). KAC Introduces Truly Ambidextrous SR-15/SR-16 Carbines/SBRs: SOPMOD M4/M4A1 Carbine/SBR-Config 5.56mm NATO Weapons. DefenseReview.com (DR): An Online Tactical Technology and Military Defense Technology Magazine With Particular Focus on the Latest and Greatest Tactical Firearms News (Tactical Gun News), Tactical Gear News and Tactical Shooting News. https://defensereview.com/kac-introduces-truly-ambidextrous-sopmod-m4m4a1-carbine-config-556-weapons/
- ^ National Rifle Association. (n.d.). An official journal of the NRA | Knight’s Armament SR-15E3 IWS Mod 1. An Official Journal of the NRA. https://www.shootingillustrated.com/content/knight-s-armament-sr-15e3-iws-mod-1/
- ^ National Rifle Association. (n.d.). An official journal of the NRA | Knight’s Armament SR-15E3 IWS Mod 1. An Official Journal of the NRA. https://www.shootingillustrated.com/content/knight-s-armament-sr-15e3-iws-mod-1/
- ^ Brownells (no date) KNIGHT’S ARMAMENT SR-15 E3 MOD 2 M-LOK 5.56 16’. Available at: https://www.brownells.com/guns/rifles/semi-auto-rifles/sr-15-e3-mod-2-m-lok-5.56-16/ (Accessed: 17 October 2024).