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rjrivero · October 29, 2009, 05:17 PM

If you're using a Busy LOWER, make sure the hammer doesn't have a little HOOK ON IT. The Rock River Hammer, or DPMS Hammer is a better choice with the 9mm conversions. They aren't so rough on the hammer pin. The ramped hammers can hang up on the 9mm bolt if the bolt isn't ramped.

October 29, 2009, 05:17 PM	#8
rjrivero Senior Member Join Date: November 17, 2008 Location: NW Ohio Posts: 1,399	If you're using a Busy LOWER, make sure the hammer doesn't have a little HOOK ON IT. The Rock River Hammer, or DPMS Hammer is a better choice with the 9mm conversions. They aren't so rough on the hammer pin. The ramped hammers can hang up on the 9mm bolt if the bolt isn't ramped.