In order to participate in the GunBroker Member forums, you must be logged in with your GunBroker.com account. Click the sign-in button at the top right of the forums page to get connected.
A Couple AR Assembly Questions.
Horse Plains Drifter
Forums Admins, Member, Moderator Posts: 40,237 ***** Forums Admin
I have seen,on a website, and been told by Larry Potterfield(Youtube video)that the military armorer's manual shows the barrel nut torque is 30-80 ft. lb. They also say it needs to be torqued. With a window that wide does anybody bother to torque it?
Next question. Do you ever need to shim a flash suppressor to get it timed? The neighbor kid brought one over the other day, and it needed almost a full turn to time up. I tightened it up plenty tight, and it needed a half turn still. I had to shim mine with a copper washer to get it to index, after I saw it was out of time from the factory.
Next question. Do you ever need to shim a flash suppressor to get it timed? The neighbor kid brought one over the other day, and it needed almost a full turn to time up. I tightened it up plenty tight, and it needed a half turn still. I had to shim mine with a copper washer to get it to index, after I saw it was out of time from the factory.
Comments
#2 thats why the make crush washers
#1 lining up the barrel correctly
Understood, but if you're lining up the barrel nut with the gas tube opening, why does it need to be torqued?
#2 thats why the make crush washers
We have those, but they don't appear to crush much. If I would have horsed that suppressor the additional half turn it would have been in excess of 200# torque. which is way way too much for a 1/2 inch thread.
I have also read on here the torque can effect accuracy and some try different settings ?
they make shim packs less than 10.00 or so to allow adjusting of the flash suppressor also lock nuts you set and tighten the flash hider too where you want it
they make shim packs less than 10.00 or so to allow adjusting of the flash suppressor also lock nuts you set and tighten the flash hider too where you want it
Oh cool, thanks. I'll hunt some up.
In a perfect world you would torque the barrel nut to around 50 lbs and the gas tube would line up. But folks we don't live in a perfect world. That barrel nut isn't going anywhere with the gas tube running through it.
I am feeling kinda silly. I never thought of that. If that nut comes off, you have waaaay bigger problems. [:0]