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Posted: 8/17/2007 9:07:01 AM EDT
Is it a problem to put on the "screw tightened" gas blocks when there was already the "pinned on" kind? Will those two slots cause any problems when I go to put on a YHM front flip sight---the kind that uses the screws?

Link Posted: 8/17/2007 9:08:48 AM EDT

Link Posted: 8/17/2007 9:14:51 AM EDT
No sir, but if it really bothers you, you can plug the holes by driving the pins in and dressing the ends flush. Most clamp on sights cover the holes in the barrel though.
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