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Posted: 4/12/2006 7:02:33 PM EDT
I have a Bushmaster Ar15 that is equipped with a "super lite" barrel. I would like to replace the standard front sight assembly with the YHM-9395, which is a flip-up gas block and front sight combo. I think by standards my barrel my be to thin for this application. Does anyone know if it would "really" work from first hand knowledge. Can it be modified to work correctly?
Link Posted: 4/12/2006 7:25:55 PM EDT
It will not work, and it can't be modified to work. Your barrel is .625" in diameter, the YHM unit is meant for a 0.75" barrel.

Your best bet is to check with PRI to see if they still make their flip-up in .625"
Link Posted: 4/13/2006 4:59:16 AM EDT
Does anyone else know of any other options? Any help would be of great appreciation.
Link Posted: 4/13/2006 5:33:59 AM EDT
Link Posted: 4/13/2006 6:14:10 AM EDT

Originally Posted By mikes8750:
Does anyone else know of any other options?



Buy a free-float rail system and mount a flip up front sight on it.
Link Posted: 4/13/2006 6:22:50 AM EDT

Originally Posted By Forest:

Originally Posted By mikes8750:
Does anyone else know of any other options?



Buy a free-float rail system and mount a flip up front sight on it.



In which case you will need a LaRue .625" gas block to replace the front sight base. Or was it PRI that made such a beast? I think LaRue is the one though.
Link Posted: 4/13/2006 6:44:50 AM EDT

Originally Posted By Combat_Jack:

Originally Posted By Forest:

Originally Posted By mikes8750:
Does anyone else know of any other options?



Buy a free-float rail system and mount a flip up front sight on it.



In which case you will need a LaRue .625" gas block to replace the front sight base. Or was it PRI that made such a beast? I think LaRue is the one though.



Or dremel down the existing FSB....
Link Posted: 4/13/2006 6:53:22 AM EDT
True.

Don't forget to hit it with Krylon if you do that, before you cover it.
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