Factory Ruger Magazine (90599) Base Block 22/45 Mark IV 4

Factory Ruger magazine base to convert your older 22/45 or standard frame magazines to fit MK IV 22/45
Will convert the following magazines; 90045 (MK2 22/45), 90231 (MK3, MK4 Standard Frame), 90229 (MK3 22/45)

Click Here for our page on how to properly adjust your magazines to feed properly
*NO RUGER magazine comes from Ruger perfect.

Convert your old magazines to fit your NEW MK IV 22/45 Pistol

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