Colt AR-15 A4 Front Sight Base

[Displaced Texan]

Thanks for the link. I have read through the thread, and although there are a few people bitching about non-F marked FSB's, there are no [B]actual[B]accounts of the non-'F' marked rifles failing to zero.

For the record, my Colt A4 upper is 2/14 production, non-F marked FSB, and 'short' fsp. Zeros perfectly with both a Matech BUIS and a Colt carry handle.

[Flankenstein]

Thanks for the link. I have read through the thread, and although there are a few people bitching about non-F marked FSB's, there are no [B]actual[B]accounts of the non-'F' marked rifles failing to zero.

For the record, my Colt A4 upper is 2/14 production, non-F marked FSB, and 'short' fsp. Zeros perfectly with both a Matech BUIS and a Colt carry handle.

If it wasn't that thread it was another of the longer threads on the A4 on this forum. Guys rifle wouldn't zero, he sent it to Colt (think he requested for it to be replaced w/ a F-marked FSB) and Colt sent it back w/ a note saying that it would now zero (presumably they replaced the FSP).

[plouffedaddy]

If it wasn't that thread it was another of the longer threads on the A4 on this forum. Guys rifle wouldn't zero, he sent it to Colt (think he requested for it to be replaced w/ a F-marked FSB) and Colt sent it back w/ a note saying that it would now zero (presumably they replaced the FSP).

FWIW mine zero'd fine out of the factory and my 6720 did too.

[Flankenstein]

FWIW mine zero'd fine out of the factory and my 6720 did too.

Thanks for the clarification. I never pegged you for a whacky purist

[Flankenstein]

Another interesting question would be if you could choose between a A4 rifle with an F-marked FSB and a rifle with a standard A2 FSB, which would you choose?

I imagine most people (who knew the difference) would choose the F-marked FSB. (But I was wrong in my poll prediction so I could certainly be wrong here also)

[plouffedaddy]

Another interesting question would be if you could choose between a A4 rifle with an F-marked FSB and a rifle with a standard A2 FSB, which would you choose?

I imagine most people (who knew the difference) would choose the F-marked FSB. (But I was wrong in my poll prediction so I could certainly be wrong here also)

I guess F marked but if the same rifle was non-f marked for $1 less I'd get that instead. That's how much it's worth to me.

[SilverCat]

I'm sure glad the only reason some people won't buy it is for the sake of M16 authenticity. I would probably pass over an A2 FSB if I was trying to make a clone.

At least there's no arguments that it won't zero and that anything other than F is poor quality.

[Flankenstein]

I guess F marked but if the same rifle was non-f marked for $1 less I'd get that instead. That's how much it's worth to me.

Cold blooded...

[ssorg]

I'm curious if anyone has had success with a 50/200 yard zero with the non F marked version. I'm assuming everyone is referring to the "proper" zero of 25/300.

I should be receiving my Colt AR15A4 in the next week and will let everybody know what flavor I get.

[Hemi45]

I'm relatively new to the AR/M4. I had no idea how seriously some people take FSB's. Most of my guns are Colts because I like Colt; 1911's and wheel guns included.

This thread got me thinking...

Which of their current civilian rifles/carbines are closest to what's issued to the military? Second, since I have two, how close does the LE6920 come?