Front Sight Problem

[Augie]

Hello...
I just returned from the range with my new stag ar-15 flattop
(no carry handle/flip up rear sight/pressed on front sight).
All my shots were off to the right so I had the resident sharp shooter fire it.
He tells me that the front sight is off to the right(he had to adjust the rear sight to the left as far as it would go).He also said this is a common problem with pressed on f/sights.(and that the better companies use set screws to install the f/sight so it can be adjusted if needed)
I assume I'll have to send it back but...
*They'll probably say the problem is the shooter.
*whats to say the second upper won't have a simmilar problem.
Any opinions or comments are welcome.
Thanks...
Augie(NYC)


9

[Rew]

I have never seen a press on sight. I have a front gas block that uses a set screw and another with cross pin's. Might your front sight post be bent a bit? Send it back and ask for a fix or a new upper. ;)

[RJ Shooter]

Your barrel might be over-torqued from installation. This is becoming all the more common. Is this a factory upper, or a home build? You might just need the barrel nut loosened up and the barrel rotated a few millimeters in the proper direction.

My Bushy was that way, but I did install an adjustable front sight base (FSB). Instead of the pins, mine has four set screws underneath. Most people would never know it was a windage adjustable FSB.

Rew, when he says "pressed on" I think he's talking about a FSB with the two normal cross pins holding the FSB in place.

[Rew]

You very well might be right RJ. I thought about an over torqued barrel, but if it really is a pressed on gas block/sight base, a whole nother world of problems open up. I have seen pressed on sights, just never on an AR or 16. ;)

[desertdawg]

Let me guess...Bushmaster.

All three uppers that I have bought from them had "canted" sights.
All had to be sent back for repair.
Will never buy from bushmaster again....

[RJ Shooter]

He said STAG, and I love my Bushies! :p

[desertdawg]

He said STAG, and I love my Bushies! :p
Well I dont read so good no how.....Bushy still sucks!!! RRA all the way!!! :up:

[shamayim]

I know I'm a bit late responding to this note, but just had to throw my 2 cents in.

Your "range expert" is almost certainly wrong in his evaluation. While I'm sure that the front sight is a few thousanths off, it's almost certainly a result of the barrel pin being twisted into the left side of the slot in the upper during installation.

This whole problem w/ARs shooting to the right started when some sharpie who owned a plastics company started making pieces to put over an upper reciever, so you could clamp the upper into the vise, instead of the barrel, when installing. By grossly overpricing his injection molded plastic, ($40+??!!) he convinced a bunch of fools, including Bushmaster and Stag, to begin installing barrels that way; instead of clamping the barrel---and thus was born the "it shoots way to the right, and I have to move the rear sight all the way over" note on AR15 web sites all over the country. :apileon:

If you mount barrels the "old fashioned" way, using barrel clamp blocks, like GI Ordnance manuals still tell you to do, you don't get this problem.

So if you haven't already done so, send the piece back to Stag with instructions that the barrel is to be remounted using barrel clamping , and not reciever clamping; and see what they say.