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scsov509 · August 11, 2011, 02:32 AM

The Glock 21 Serpa fits the M&P and the Sigma 9 or 40. If you go that route however, make sure it's the low wall design since the early production Serpa had a higher side wall that could get into the trigger of the Sigma and set it off accidentally.

August 11, 2011, 02:32 AM	#2
scsov509 Senior Member Join Date: November 22, 2006 Posts: 819	The Glock 21 Serpa fits the M&P and the Sigma 9 or 40. If you go that route however, make sure it's the low wall design since the early production Serpa had a higher side wall that could get into the trigger of the Sigma and set it off accidentally.