SIG Sauer 556 Arms Forum banner
1 - 7 of 7 Posts

·
Registered
Joined
·
7 Posts
Discussion Starter · #1 ·
i have a SIG "swat" patrol rifle,. i eventually want to SBR it once i get a approved F1 back. my question is how hard are the barrel swaps & will SIG sell me a 556 pistol barrel?

i would love to use a 556 pistol barrel if i can get ahold of one,. i would not shy away from chopping the 16in. barrel if i had to but this would not be my first choice.
 

·
Registered
Joined
·
67 Posts
My opinion if I were you is to try to purchase a P556 separately, or sell your rifle and purchase a P556.

Replacing the barrel can be done, but that will require-beyond the purchase of the new barrel-either the gunsmithing costs or the purchase of the proper tools to do so, as well as the hassle of selling the existing barrel to recoup some of your money. This assumes nothing else unexpected comes up during the swap.

Cutting down the existing barrel opens up the possibility of the bore axis being off-center at the cut line as well as potential gas issues if the gas port on the barrel is improperly sized for the new dwell time.

SBRing a P556 is as easy as removing the end cap adding a M4 compatible stock assembly if you stick with the non-classic lower version.

Just my 3 cents (2 cents + the Federal Reserve's inflationary policies adjustment)
 

·
Registered
Joined
·
7 Posts
Discussion Starter · #3 ·
The barrels do not seem to be much of a issue as far as replacement,.. Just need to make sure it will headspace correctly. But I do understand Murphy just loves showing up at the worst possible time.

I like everything about the swat patrol except the barrel length,.. I absolutlely hate the M4 stocks on the SIG,. which is why I got a carbine with the classic lower.

I think the barrel swap will be the the most cost effective way,. So long as I can get a 10in. barrel.
 

·
Registered
Joined
·
2 Posts
cruzie27 said:
i have a SIG "swat" patrol rifle,. i eventually want to SBR it once i get a approved F1 back. my question is how hard are the barrel swaps & will SIG sell me a 556 pistol barrel?

i would love to use a 556 pistol barrel if i can get ahold of one,. i would not shy away from chopping the 16in. barrel if i had to but this would not be my first choice.

If you're willing to pay for the gunsmithing costs I have a 10" sig barrel I'd trade for a 16.
 

·
Registered
Joined
·
49 Posts
make that three days. tool doesn't fit with the rail on, and guess who doesn't have the right sized torx wrench to pull the rail...? :x
 

·
Registered
Joined
·
49 Posts
...a couple quick notes on barrel removal:

1) have a VERY stout vise available, mounted as sturdily as possible. i've got a big 10" that i tore off my bench. i had to go to a friend's machine shop and use one of his...

2) i needed heat, and a cheater pipe that was almost 5 feet long to get the barrel free. there is a LOT of torque necessary.

3) the receiver tool relieved a good bit of finish from the front of my receiver. :cry: looks like i'll be refinishing now too.

so far, my suggestion would be, don't remove your sig's barrel if you don't need to.
 
1 - 7 of 7 Posts
Top