Engineering:SR-25 pattern magazine

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Short description: Detachable firearm magazine

An SR-25, AR-10 or LR-308 pattern magazine is a type of detachable firearm magazine based on the original Armalite AR-10 "waffle" magazine design introduced in the late 1950s, used for .308 Winchester and 7.62×51mm NATO cartridges.

The design has been used on many AR-10 derivatives, for instance in the Knight's Armament SR-25 and DPMS Panther LR-308, as well as bolt-action rifles such as the Mossberg MVP .308, Ruger Precision Rifle and Q FIX. Aftermarket magazines are produced by Magpul, Lancer Systems, and others.[1] Not all AR-10 rifles use magazines compatible with the SR-25 pattern. For example, HK417/MR308/MR762 uses a proprietary design. Notably, Armalite switched from their original pattern magazines to modified M14 magazines in 1996 with their new AR-10B model,[2] but reintroduced their original (SR-25 pattern) magazine design with the AR-10A model in 2012.[3][4]

Firearms compatible with SR-25 pattern magazines

AR-10/AR-308 type rifles

  • Armalite AR-10A
  • Bushmaster .308 ORC
  • Colt CM901-16S (.308 configuration)[5]
  • Colt Canada C20 DMR
  • CORE Rifle Systems CORE30[6]
  • Diamondback DB10
  • DPMS LR308
  • JP Enterprises LRP-07[7]
  • KAC SR-25
  • LaRue OBR
  • Les Baer .308[8]
  • LMT .308 MWS/L129A1
  • LWRCI REPR[9]
  • M110 SASS
  • Mega Arms MATEN
  • POF P-308 and Revolution/Rogue
  • PSA PA-10
  • Remington R-25[10]
  • Remington RSASS
  • Ruger SR-762 and SFAR
  • SIG716[11]
  • Smith & Wesson M&P10
  • Sako M23 (7.62 TKIV 23)

Other rifles

Cartridges compatible with SR-25 pattern magazines

Some cartridges are dimensionally similar to .308 Winchester to fit into SR-25 pattern magazines, its not uncommon for the cartridges to have the same rim diameter, which allows the use of the same bolt.

Cartridge Requires Modification to the magazine Capacity in standard magazine
.260 Remington 20
6.5mm Creedmoor no 20
6.5×47mm Lapua no 20
.277 Fury no 20
7mm-08 Remington 20
.308 Winchester/7.62×51mm NATO no 20
8.6mm Blackout no 20
.338 Federal[16] yes 20
.45 Raptor yes 20
RAS-12 Shotgun[17] yes 5

See also

  • STANAG magazine, a standardized firearm magazine based on the 5.56×45mm cartridge

References

  1. Modern AR-10 Magazines: Our Four Top Picks For Dependable, Well-Made AR-10 Magazines - Gun World Magazine
  2. The Original Retro AR-10: Armalite's AR10B – Forgotten Weapons
  3. New from Armalite: AR-10A - The Truth About Guns
  4. Bartocci, Christopher R. (15 August 2023). "Armalite’s AR-10A". Small Arms Defense Journal (© 2024 Chipotle Publishing). https://sadefensejournal.com/armalites-ar-10a/. 
  5. DefenseReview.com - DR Exclusive: Colt CM901 7.62x51mm /.308 Win
  6. Shooter's Bible Guide to AR-15s, 2nd Edition: A Comprehensive Guide to Modern Sporting Rifled and Their Variants, by Doug Howlett and Robb Manning, November 1, 2016
  7. JP LRP-07 Long Range Precision Rifle 7.62mm with Left-Side Charging System – DefenseReview.com
  8. Les Baer .308 Ultimate Match Rifle
  9. Return of the REPR: Wringing Out LWRCI's REPR MKII Rifle
  10. American Hunter | Remington R-25
  11. GUNS Magazine SIG SAUER SIG716 Patrol - GUNS Magazine
  12. It's finally here! The B&T APC308 Carbine and DMR
  13. Hints of the Future: The TAVOR 7 - The Mag Life
  14. Gun Review: IWI Galil ACE in 7.62 NATO - The Truth About Guns
  15. "IWI Now Shipping .308 Galil ACE". © Recoil Magazine. 25 October 2016. https://www.recoilweb.com/iwi-now-shipping-308-galil-ace-115984.html. 
  16. "Successor to the Scout: Q's 8.6mm Fix". 14 April 2023. https://www.youtube.com/watch?app=desktop&si=05MfehOtIb3tjN0L&v=6fQ45sdwqLQ&feature=youtu.be. 
  17. "Intrepid RAS-12 / AR-12 - Modern Firearms". 2024-06-01. https://modernfirearms.net/en/shotguns/u-s-a-shotguns/intrepid-ras-12-ar-12-eng/.