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Old October 20, 2008, 05:35 PM   #4
Jim Watson
Senior Member
 
Join Date: October 25, 2001
Location: Alabama
Posts: 11,395
The usual suspect for rapid frame ramp marring on an aluminum gun is the magazine follower tipping forward on the last round. There are some designs made to prevent that. But bullets will do it eventually. As Harry says, when it gets beat out enough to affect function, a steel insert can be put in.
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