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Old October 10, 2012, 03:46 PM   #11
Walt Sherrill
Senior Member
Join Date: February 15, 1999
Location: Winston-Salem, NC USA
Posts: 6,028
Delayed blowback action pistols like the P9s tend to cycle somewhat forcefully due to high breech pressures when opening.This rams the slide up hard against the return spring to the extent that normal slide stops will be battered and frames cracked prematurely.
Pressures from the 9mm round are generally much higher than the .45 round, yet the 9mm models don'tuse recoil buffers.

I wonder if the buffer is there for other reasons?
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