AR Sponsor
Posted: 12/16/2006 4:29:29 PM EDT
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There is no "indexing" with a clamp on style. Just take the scope off, set the rifle on a table upside down, loosen clamp "wiggle" the rifle (with slight down pressure) until the rear sight and front sight are even (both sides of then are touching the table), retighten the clamp. It should be straight after that. |
i dont have one yet.i was thinking of getting one to eliminate the cant in my pinned on FSB. thanks for the info!now i know |
Damn. That's too simple. I've been screwing a piece of USGI cleaning rod into the front sight post hole and laying a square on the upper receiver, which is an idea I adopted from a technique I use to time FAL barrels to receivers. |
Thanks! |
| I simply center the windage adjustment on my rear sight, then insert a laser boresighting device into the barrel. I move the FSB back and forth until the sights align with the laser dot, and tighten. Now I know that it will be "boresighted" when the windage is at zero, and require minimal adjustment when sighting in the rifle. After changing several FSB's and picatinny gas blocks, I find this is the easiest method for me. |
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I'm not trying to start anything here, but I wanted to pass along an opinion from Larry Vickers. He mentions in a recent G&A article that a clamp-on FSB on a tactical rifle practically screams, "AMATEUR". Apparently he believes taper pins are the only way to go. |
Yeah, the SPR uses a PRI flip-up front sight and that's pretty amateur too...
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I partially agree. I mean... on a competition gun or Special Purpose whatever they might be adequate, but I wouldn't want clamp on for my fighting rifles. That's just my preference! |
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Isnt that what makes U.S. great! The clamp on will do me fine.IM not headed for Irag with it.I can see the points made.less likely to move or get knocked off. wouldnt some LOC-Tite help keep a clamp on from moving?(not the permanent type) |
I will agree......but here is a quote from ME: " If you ARE an amateur, try not to scream professional too loudly......someone might just call you on it." So, that being said, when you become a professional.........get a different gas block. Let the holes in your target tell the story. |
AR Sponsor
i installed a YHM FF LTWT handgusrd today and i noticed when i put it back together the FSB was canted to the left.i think it has been like that.my rear iron sight was cranked a little to the left for origianal sightin.

