Midlength barrel with non-F-marked FSB

[gt5966b]

I picked up a midlength 16" barrel recently from a well respected manufacturer and was a little surprised to find out that the pinned FSB on it was not f-marked. I haven't measured yet to verify the height, but assuming that it isn't the f-marked height, does that mean that the fsb is incompatible with flat top mounted sights (Troy in this case)?

Thanks in advance for any help.

[m16]

If you run out of adjustment you can always replace the sight post with a taller one.

[citizensoldier16]

If you run out of adjustment you can always replace the sight post with a taller one.

Exactly.

[uncle money bags]

Sooooo, who is the manufacturer?

[Iraqgunz]

Wrong. If its not made right, its not made right. Simple as that.

If you run out of adjustment you can always replace the sight post with a taller one.

[citizensoldier16]

Wrong. If its not made right, its not made right. Simple as that.

With deep respect Iraqgunz, I believe that replacing a sight post is easier than replacing a FSB. While the rifle was, indeed, made incorrectly...the solutions for the end user are:

a) send the rifle back and wait
b) replace the FSB with the correct F-marked one
c) install a taller sight post

While operators such as yourself and others on this forum would argue that option A is the most appropriate...option C is also viable for the civilian shooter.

I'm not saying you're wrong...on the contrary, you're absolutely right. I am merely supplying the OP with a remedy that is easily completed.

Iraqgunz, you are a wealth of information...from which I have gleaned untold amounts of knowledge. I have no grudge with you, or your advice. As I said, ultimately, you are absolutely right.

However, if the OP is just using his AR for range use or casual shooting, replacing the post is easier.

[jstone]

Op i have seen some front site bases that were not market, but they were the proper height. The first thing you need to do is measure it. It should be 1.98 inches from the top of the barrel to the flat area where the post threads into. Im almost positive that number is right, but someone will correct me if Im wrong.

If it is the wrong size just replace it. Regardless if it is a range gun. There is a right way to do things, and if it is one of the companies that are highly regarded by this forum. It will be in a timely manner as well. To replace the fsb should take no time unless the company is out of fsb's, but they should give you a rough estimate of the time it will take to remedy the situation.

[Iraqgunz]

Yes, I understand that. But, this is why trash peddlers have been able to survive. Because people to know that they didn't know and then once they did they didn't force the issue. Had that been happening companies would have figured out it was cheaper to do it correct the first time or they would have been impacted financially or their name would have been shit.

I was contacted by a police agency in Australia that purchased Remington R4 carbines and they are having issues because they are using Magpul rear sights and Aimpoint Comp M2's and they can't get a proper zero with their non F-marked FSB's.

Now they have to get taller posts, but they are concerned about officers damaging them because the posts will stick up out of the protective wings.

In the OP's case he has purchased a barrel only. So I would contact that company and tell them to make it right.

With deep respect Iraqgunz, I believe that replacing a sight post is easier than replacing a FSB. While the rifle was, indeed, made incorrectly...the solutions for the end user are:

a) send the rifle back and wait
b) replace the FSB with the correct F-marked one
c) install a taller sight post

While operators such as yourself and others on this forum would argue that option A is the most appropriate...option C is also viable for the civilian shooter.

I'm not saying you're wrong...on the contrary, you're absolutely right. I am merely supplying the OP with a remedy that is easily completed.

Iraqgunz, you are a wealth of information...from which I have gleaned untold amounts of knowledge. I have no grudge with you, or your advice. As I said, ultimately, you are absolutely right.

However, if the OP is just using his AR for range use or casual shooting, replacing the post is easier.

[Iraqgunz]

You can't just replace them because each barrel is drilled and pinned separately which means that depending on how it was made it could be canted or the holes for the FSB pins will not line up right.

Op i have seen some front site bases that were not market, but they were the proper height. The first thing you need to do is measure it. It should be 1.98 inches from the top of the barrel to the flat area where the post threads into. Im almost positive that number is right, but someone will correct me if Im wrong.

If it is the wrong size just replace it. Regardless if it is a range gun. There is a right way to do things, and if it is one of the companies that are highly regarded by this forum. It will be in a timely manner as well. To replace the fsb should take no time unless the company is out of fsb's, but they should give you a rough estimate of the time it will take to remedy the situation.

[0reo]

I think its possible the op either didn't notice in the ad which version of the front sight came with the barrel, or perhaps the vendor didn't make that information clear. In this case not right for the op does not necessarily mean manufacturer fault.