OEM replacement part for KSC / KWA gas pistols.
This metal replacement slide catch assembly fits all M1911 MK Series and M1911A1 pistols that carry a 21 round magazine. On respective diagrams, this may appear as part 21, 407, or 336. If you are using a 14 round magazine and would like to start using the 21 round, double stack magazines, you'll need to purchase the double stack slide catch as well as the double stack magazine catch.
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