Tool needed

[Judicator]

Ok so here's the deal. Bought my wife a 5.7 upper. While taking off the flash hider the barrel unscrewed. I contacted 5.7 and they said torque it to 40pounds and use vise grips on the barrel..... Well last I checked I have never seen vise grips that accept a torque wrench. Anyone have any ideas? Thanks.

Edit: forgot to mention 5.7 uppers have barrels that thread INTO the upper. No barrel nuts on these.

http://tapatalk.imageshack.com/v2/15/02/10/f4d6930f4db1070bb6a96378ca79fa71.jpg

Sent from my IPhone, please ignore spelling mistakes. Siri is dumb.

[MonkeyBomb]

Torque the barrel nut to 40lbs. I have no idea why you would use vice grips in the barrel. Are you sure they didn't say a receiver vise?

http://www.rifleoutfit.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/p/m/pm123-5_3.jpg

[Judicator]

Updated first post forgot an important part.


Sent from my IPhone, please ignore spelling mistakes. Siri is dumb.

[MonkeyBomb]

Disregard. Now that you have a photo posted that's bizarre. That is outside of my lane.

[GaSwamper]

If that's cradled down in a monolithic handguard how are you even supposed to get vice grips on it? If they mean torque from the muzzle that's not right, in theory it wouldn't torque right. Might as well get a strap wrench and use German torque if that's the case.

[Judicator]

Lol German torque = feel I take it
90% is in the hand guard.

Sent from my IPhone, please ignore spelling mistakes. Siri is dumb.

[GaSwamper]

German torque=Goodntight. Usually for threaded barrels like on bolt actions you clamp the barrel into a barrel vice on the bench and torque the receiver (kinda). I don't think an Alu. AR receiver could handle this though.