I have been looking to purchase a barrel, there are a lot of barrels with no FSB.

Are there FSB with out taper pins, like a clamp on?

Is it difficult to install a FSB with the taper pins?

Thanks.

I have never heard of a clamp-on FSB, but anything is possible. Installing a normal FSB on a tapped barrel is a piece of cake. The pins should line everything up then you tap them down with a brass hammer. One note; try blowing on the gas tube with your mouth once the FSB is installed. The air from your mouth should be exiting inside of the barrel. If your air does not escape, then you have a big problem on your hands, and your rifle will not cycle. Believe it or not, this has actually happened to me.

http://www.armalite.com/ItemForm.aspx?item=EU0240MPKIT

Yes there are clamp on ones. There are also ones with set screws but the barrel needs to be dimpled for those. I usually use the clamp on type that cover the taper pin holes after removing a stander a2 FSB .. I use the Daniel Defense low pro clamp on gas block for this application. I just purchased a SS WOA barrel with no FSB and used a the SS VLTOR clamp on gas block and it worked great.

I was just faced with this same problem.  I picked up an old M16A1 barrel with the smaller diameter.  Had a heck of a time finding a.625 FSB.  Read up on how to re-drill the barrel and ream it for taper pins, but ultimately decided to pick up a set screw FSB from dezarms off of gunbroker.  They use 5 set screws and are really nice FSB's.  Drilling a small dimple was easier than re-drilling the barrel for pins for me.  Good luck.
JestersHK

Hang on there, each barrel is drilled using an individual FSB, because it's technically a custom job.  One FSB might not fit on another barrel that was drilled with a different FSB.

OP, if you're getting a barrel that has NOT been drilled for a pinned FSB, then consider other options.  You're looking at a $75 gunsmith job to have him correctly drill the barrel and put in the pins and drill a new FSB (new, they come without the holes drilled).

This is the exception to the rule with ARs.   Most AR stuff is usually drop in, as everyone (well most everyone) will have close enough specs to each other that you can swap parts in and out.  It's not quite the same with A2 front sight bases, since they have to be drilled, and each drill job is going to be just slightly different than the next.

I just picked up one of those too.  Looked pretty good.  It's best to check for burrs from the tapping before sliding it down a barrel though.

I've used a couple over the years and these units are great..........give you a mechanical zero if you have the patience.................

That is what I'm looking for is  this an armalite like a previous poster shared a link to?

Thanks for the help guys.

Anyone else feel free to share links to where one can purchase.

Dezarms.com is where I found mine at.  Then I read they sell alot on Gunbroker.  
http://www.gunbroker.com/Auction/ViewItem.asp?Item=135082588
One of many they have on there.
Hope this helps
JestersHK