govt profile barrel and FSB for kino setup

[corey4]

i picked up a BA 12.5", carbine gas, govt profile barrel to possibly do a kino setup. i didn't realize the .750" thickness didn't go all the way to the threaded muzzle. it has the area for the gas block/front sight base, then steps down a few thousandths for an inch or so, the steps down again for about .5", then the threaded muzzle.

is there anyway i can use a FSB on the portion of the barrel that is a bit smaller than the gas block diameter? can i use a clamp-on FSB instead of pinning it? will i be able to squeeze the bolts enough and the barrel not be too thin?

if you hover over the muzzle area to enlarge the image, you can see what i mean.
https://ballisticadvantage.com/12-5-inch-556-gov-carbine-cmv-modern-barrel.html

or am i SOL?

[Hammer_Man]

It depends on the measurements of the barrel. Measure it out with a set of calipers to check if each section is (a) long enough for a FSB, and (b) the correct diameter for a FSB (usually .750" or .625"). If your barrel does not meet either of those criteria, than you're going to need another barrel.

[jsbhike]

http://jerkingthetrigger.com/2014/01/03/kino-xl/

To me, that appears to be using a .625" front sight so you would need one of those and turn down a section of the barrel where you want to mount it.

[ccosby]

It depends on the measurements of the barrel. Measure it out with a set of calipers to check if each section is (a) long enough for a FSB, and (b) the correct diameter for a FSB (usually .750" or .625"). If your barrel does not meet either of those criteria, than you're going to need another barrel.

Yea if it doesn't fit the .750 one check and see if its more than .625. If its thicker you can turn it down to .625 and use one of those fsb's on it.

[Iraqgunz]

This is the barrel you need to do it correctly. https://www.bravocompanyusa.com/BCM-Standard-12-5-Carbine-Barrel-Stripped-NFA-p/bcm-brl-s-12%20std.htm.

If you want to Bubba it go with the cheaper BA barrel. I would never recommend a clamp on FSB.


i picked up a BA 12.5", carbine gas, govt profile barrel to possibly do a kino setup. i didn't realize the .750" thickness didn't go all the way to the threaded muzzle. it has the area for the gas block/front sight base, then steps down a few thousandths for an inch or so, the steps down again for about .5", then the threaded muzzle.

is there anyway i can use a FSB on the portion of the barrel that is a bit smaller than the gas block diameter? can i use a clamp-on FSB instead of pinning it? will i be able to squeeze the bolts enough and the barrel not be too thin?

if you hover over the muzzle area to enlarge the image, you can see what i mean.
https://ballisticadvantage.com/12-5-inch-556-gov-carbine-cmv-modern-barrel.html

or am i SOL?

[GH41]

This is the barrel you need to do it correctly. https://www.bravocompanyusa.com/BCM-Standard-12-5-Carbine-Barrel-Stripped-NFA-p/bcm-brl-s-12%20std.htm.

If you want to Bubba it go with the cheaper BA barrel. I would never recommend a clamp on FSB.

Or this if he is starting with nothing.>> https://www.bravocompanyusa.com/searchresults.asp?Search=Kino&Submit=

[RHINOWSO]

Or this if he is starting with nothing.>> https://www.bravocompanyusa.com/searchresults.asp?Search=Kino&Submit=

Yeah, their prices for Kinos are reasonable, just buy the whole thing already done would be my suggestion and ditch the BA barrel.

[6933]

Yeah, their prices for Kinos are reasonable, just buy the whole thing already done would be my suggestion and ditch the BA barrel.

Yep. Can you return the BA barrel? If not, try to sell it if you need to recoup some $.

[corey4]

i'll either try to sell it or still use it on a different upper.

i thought the govt profile was .750" all the way to the muzzle, lesson learned. i have a BCG, stripped upper, and a MK18 rail i was going to use to make a kino. that's why i didn't bother with buying the BCM kino, which turns out i'm probably going to be doing anyways. i was just asking wondering if it was still feasible even though it may have been a bit hokey. oh well.

thanks for the replies.

[JeffM.]

Yea if it doesn't fit the .750 one check and see if its more than .625. If its thicker you can turn it down to .625 and use one of those fsb's on it.

Conversely, you could purchase a .625 FSB and have it opened to .740 or whatever the appropriate diameter for your barrel would be. I don't know if all manufacturers use the same FSBs for .750 & .625 barrels, but my BCM sourced .625 FSB is the same as a standard one, the only difference being a smaller hole bored through it, which leaves plenty of meat to open it up for a Dissipator or Kino build. I haven't had time to start the project, but that is my intention for this FSB.