Long Action 338LM 3.850” AICS Box Magazine

The long action AICS 338LM Lapua magazine is built from steel, heat-treated, and then coated with a special teflon for a better finish. The 3.850" AICS magazine is designed around the 338 Lapua Magnum and similar cartridges.


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 338 Lapua Magnum and 300 Norma Mag but with some slight feed lip tuning they can also work for other cartridges of similar case design to the Lapua Magnum. 

AICS Magazine Compatibility

There are 3 different 338 LM AICS magazine lengths. You have 3.715”, 3.775 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 similar. No magazine is caliber specific but the name/variant is designed to work best with cartridges that are within 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 338 Lapua Magnum Magazine: 
    • Magazine Capacity: 3 Cartridges
    • Magazine Weight: 5 Ounces
    • Magazine Internal Length: 3.750”
  • 5 Round AICS 338 Lapua Magnum Magazine: 
    • Magazine Capacity: 5 Cartridges
    • Magazine Weight: 7.3 Ounces
    • Magazine Internal Length: 3.750”

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