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Posted: 5/25/2003 11:06:38 AM EDT
I just purchased an M4 A3 type upper and placed on a tactical type carring handle asseblies made by Rock River. Using the A2 type sights I cannot Zero the weapon at 100 yds. I have to almost unscrew the front sight completely out to hit the center area. Is there sometime I'm missing or is a special front sight I needed if I'm going to using the standard sights. I plan on purchasing a Reflex type sight, but till want to have the capability of using the standard sights.

Any help or advise appreciated.

John
Link Posted: 5/25/2003 11:12:44 AM EDT
Bushmaster sells a .040" taller front sight made for M4 uppers. That ought to cure your problem.
Link Posted: 5/25/2003 2:16:50 PM EDT
Colt M4 barrels use a different front sight base than their "A3" carbine's and every other brands front sight base. As "Seth_Livzz" said, [url=bushmaster.com/shopping/scopes/9349056-m.asp]Bushmaster[/url] sells the correct front sight post to compensate.
Link Posted: 5/25/2003 4:16:37 PM EDT
Thanks for the advise, I just purchased one from Bushmaster. Its great to have knowledgeable people on the board!! Thanks! John
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