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Magazine Rebuild Compatibility Chart

This is the beginning of a "rebuild compatibility chart" for a wide variety of magazines, rifle and pistol. Under California law, it's entirely legal to rebuild one magazine into another. See the attached letter from the California DOJ for confirmation.

About Confirmation Levels

Due to my not possessing the majority of the mags in this guide personally, I must rely on hearsay, at least for the time being. To that end, I have come up with a number of confirmation levels which will be used in this guide.
  • Confirmed: Either I have reproduced the steps personally, or I have access to pictures/video confirming both compatibility and function for all steps of the process. These will be credited.
  • Documented: I have access to a how-to / writeup for this; links may be provided. These will be credited.
  • Hearsay: Someone on the internet says it'll work. No pictures, may have personal vouching. These may be credited.
  • Disputed Hearsay: Someone on the internet says it'll work, another person says it won't. These may be credited.

STANAG Magazine Conversions

Because STANAG magazines are so ubiquitous and the conversions are most popular with these, they merit their own section. If parts will not directly interchange, but another third-party part is available that will work with both magazines, that third-party part may serve as a "bridge part" between the two magazines.
  • Magpul Ranger Floorplates: These are designed to fit onto 30rd USGI STANAG magazines. Internet hearsay has it that the Magpul Ranger floorplate will also function on the 20rd magazines, thus providing a "bridge" between USGI 20 and 30 round mags.

Owned Magazine Desired Magazine Interchangeable Parts Confirmation Notes
C-Products Stainless Steel HK Anti-Tilt followers are compatible. Confirmed  
USGI 30rd C-Products Stainless Steel mag All Hearsay  
USGI 30rd HK Steel ONLY springs are compatible. Confirmed  
USGI 30rd Magpul PMAG (polymer) Springs are compatible, followers (with slight trimming). Documented Credit to 69Mach1, of Calguns.
USGI 30rd Magpul PMAG w/window Springs are compatible. Springs are compatible; followers and floorplates are not even similar. Confirmed  

STANAG Magazines of Interest
I presently have no information on these magazines, and would dearly love to have parts compatibility information.

  • Command Arms "Count Down" Magazine: I suspect that a USGI 30rd spring would work with this magazine, but am not sure.

Rifle Magazine Conversions

Gun Owned Magazine Desired Magazine Interchangeable Parts Confirmation Notes
AR-15 w/Ceiner conversion Original Ceiner magazine Ceiner Magazine by Black Dog Machine Follower, spring, baseplate retainer Hearsay

Pistol Magazine Conversions

Gun Owned Magazine Desired Magazine Interchangeable Parts Confirmation Notes
CZ-75 Family 16rd CZ-75B 9mm 19rd SP-01 9mm Follower Hearsay  
CZ-75 Family 16rd CZ-75B 9mm 25rd CZ-75B 9mm Follower Hearsay  

-- SeanNewton - 07 Jan 2009

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Topic revision: r2 - 09 Jan 2009 - SeanNewton
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