Long Action RUM/PRC 3.850” AICS Magazine

The RUM long action 3.850" AICS magazine is built from steel, heat-treated, and then coated with a special Teflon for a better finish. This magazine is specifically built for the high-shoulder Ultra-Mag case. It is compatible with most ultra-mag and EDGE cartridges and has worked great for the popular 7mm and 300 PRC.


Product Details 

AICS magazines have become the industry go-to for aftermarket DBM systems. Long action AICS magazines are SSSF meaning single-stack, single-feed and are offered in 4 different lengths. These specific magazines are 3.850 AICS magazines commonly called CIP length and are tailored to work best with popular calibers like 300 and 338 Remington Ultra Magnum, 7mm and 300 PRC, 338 EDGE, many Weatherby cartridges and 7mm STW. 

AICS Magazine Compatibility

There are 2 different RUM AICS magazine lengths. You have 3.715” and 3.850” length. So make sure you know which length of magwel your chassis or stock bottom metal is cut for. There are also different variants for these lengths. XLR Industries carries 4 different variants that are offered in the 3.850” length. You have 300 Win Mag, 30-06, RUM and 338LM and similiar. No magazine is caliber specific but the name/variant is designed to work best with cartridges that are within in that cartridge family or similar design. All of these are sold in both 3 and 5 round capacity magazines. If you are not sure which magazine will work best with your rifle or cartridge CLICK HERE for our magazine compatibility chart. If you still have questions feel free to give us a call at 970-241-1807. 

Product Specifications 

These single-stack, single-feed steel magazines are manufactured by Accurate Magazine a industry leader in magazine manufacturing.

  • 3 Round AICS 300 RUM/PRC Magazine: 
    • Magazine Capacity: 3 Cartridges
    • Magazine Weight: 5 Ounces
    • Magazine Internal Length: 3.750”
  • 5 Round AICS 300 RUM/PRC Magazine: 
    • Magazine Capacity: 5 Cartridges
    • Magazine Weight: 7.3 Ounces
    • Magazine Internal Length: 3.750”

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