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Sidearms & Scatterguns S&W MP9c Thumb Safety

Exo

Sergeant
Full Member
Minuteman
Jan 20, 2011
347
1
El Mirage, Arizona
Quick question to the guru's out there. Is it possible to ADD a thumb safety to an MP9c without factory help? The one I just got does NOT have the thumb safety. Can I buy this and add it on or is this a factory type option?