Posted: 4/16/2011 12:43:13 AM EDT
| I'm getting ready to send you guys an upper for some work. I have a clamp on YHM FSB to put on. Can this be pinned on? And if so, what does that run? Is it even necessary? Thanks. |
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Yes, a clamped unit can be pinned, however, being a clamped unit, i believe it to be a waste of money, since if they start coming apart at the "clamp" (which is what would cause them to slip) the pin won't help much.
If you decided to do it anyway, i suggest the pin be installed on the top section, at the front. That way, the pin will keep it secure longer, if the screws come loose. 
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