Gun smithing at home question.

[bsmith918]

I have a Geissle reaction rod and love it. Very handy for upper receiver work!

 

[doctorjj]

Never had enough barrel to clamp. Googled reaction rod and Brownells now has $50 bucks of mine. Thank you!

You're welcome. Just don't use the reaction rod to install or uninstall barrel nuts. Contrary to what Gieselle or anyone else says, it's a bad idea.

 

[NikatKimber]

You're welcome. Just don't use the reaction rod to install or uninstall barrel nuts. Contrary to what Gieselle or anyone else says, it's a bad idea.

Does the reaction rod not lock into the receiver also?

 

[HiredHand]

Does the reaction rod not lock into the receiver also?

https://www.okshooters.com/showthread.php?203127-Torque-help!!!!&highlight=geissele+reaction+rod

 

[NikatKimber]

I'll have to pull up my 3D model of the AR at some point and mull it over. I think either way, you are transmitting torque through the index pin. I'd go with your statement for now, since you seem to have thought about more at this point.

Either way, you want the right tools for the job.

 

[HiredHand]

I'll have to pull up my 3D model of the AR at some point and mull it over. I think either way, you are transmitting torque through the index pin. I'd go with your statement for now, since you seem to have thought about more at this point.

Either way, you want the right tools for the job.

I'm not a physicist, but here is my opinion. The barrel nut clamps the barrel extension and receiver together, there shouldn't be any rotation of the barrel or receiver happening. Unless, you generate enough friction between the barrel nut and receiver threads or barrel nut and barrel extension to overcome the clamping force being generated. The Army TM advises clamping the barrel in a vice while torquing the barrel nut, FWIW.