How much does it cost to thread the 522 heavy barrel for a supressor?
I have a potential trade but want to be able to use my supressor. My current barrel is threaded but the one I would be trading for is not.
Kinda confussed on what your asking. The 522 is the 22lr line. Are you refering to the 22lr 522 Target model or the 556 DMR?
If your refering to the 556 DMR then this is what I recently found out. Yes, you can swap the barrel on a DMR to a 556 SWAT lets say. However you will need the gas system and handguard also. That being said, SIG will not sell you those parts. I called them and they said no. SIG doesnt sell many parts. Plus I dont know if the upper being the serial numbered part has anything to do with it. The DMR now has the 1X8 18" barrel which is what I wanted. I went the AR 18" route instead.
If you are asking if one can take a .22 caliber 522 heavy barrel and have it rechambered to fit a 5.56mm round can it be installed on a 556 receiver? I would think the answer is no.
The 522 uses a locking nut to keep the barrel in the receiver and the 556 torques it in good. I don't know if the thread pitch is the same either.
Also the rifling is probably more for a .22LR and not suitable for 5.56mm
The metallurgy might not be as good either. Does a .22LR barrel need to use as high a quality steel as a 5.56? Probably not. Not sure if the do anyway though.
I would think it shouldn't cost too much to have a 522 heavy barrel threaded. They should be fairly easy to remove from the receiver and put in a lathe.
I recently had an AR heavy barrel threaded for $65 and that included removal from the receiver, removal and re-installation of the gas block, and re-install the barrle with a free float handguard.
I would think the work on a 522 barrel would be less as removal and re-install of the barrel should be easier, and (fake) gas block removal and re-install is also easier. If you just send in the barrel to have done then the work should be pretty much straight forward. Less hourly labor charges.
The barrel will already be removed from the rifle. All he would have to do is take it to the gunsmith to get it lathed.