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AR15.COM
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5/22/2004 4:26:42 PM EDT
I recently purchased a Colt Match Competition with a flat top upper. Since I want to put a scope on it, I decided to install a DPMS gas block. When I installed the gas tube, I realized that the rollpin on the gas block was significantly smaller than the one I pulled out of the front sight. As a result, the gas tube was not tight in the block.

Does anyone have any experience in this? Will it present a problem and, if so, what should I do to correct it?
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