Castle Nut Torquing

[jschmitt08]

I am installing a QD end plate on my Colt and am need of some advice. The tools I used to get it off was the hammerhead tool with the lower secured in a Magpul Bev Block/vise. This was no issue. As far as putting it back together, I have a torque wrench and will use loctite C5A. My concern is with how the lower is secured in the bev block...would applying the proper torque spec cause any harm using this combo?

[titsonritz]

And why are you using Lotite? A castle nut should have an appropriate anti-seize compond applied, torqued to spec and staked in two places.

I not seeing how a Bev block and Hammerhead combo would harm anything.

[jschmitt08]

And why are you using Lotite? A castle nut should have an appropriate anti-seize compond applied, torqued to spec and staked in two places.

I not seeing how a Bev block and Hammerhead combo would harm anything.

Loctite C5A is anti seize, not threadlocker. I was more worried about possible stress or flex to the lower.

[titsonritz]

Loctite C5A is anti seize, not threadlocker. I was more worried about possible stress or flex to the lower.

Oops, duh, my apology.

[Hammer_Man]

Torque spec is 40 ft. Lbs plus or minus 2, it's not a lot of torque. I've never used a Bev block to secure a lower, but if it secures through the mag well it should be fine. Just go slow, and stop if you feel like damage is being done.

[jschmitt08]

Torque spec is 40 plus or minus 2, it's not a lot of torque. I've never used a Bev block to secure a lower, but if it secures through the mag well it should be fine. Just go slow, and stop if you feel like damage is being done.

Yes it will be secured through the magwell.

[kgj1119]

Bev block will be fine. A magwell holder will also work just fine. Just support it with ur hard while doing s proper torque. And use the anti seize. And stake in 2 places. It will be good. You would be surprised how many top manufacturers for properly torque the castle nut


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[dentron]

I would highly recommend a reaction block instead of a magwell block for installing receiver extensions.

And yes staking is a must. Its also not that hard to do , or undo for that matter.

[elephantrider]

I would highly recommend a reaction block instead of a magwell block for installing receiver extensions.

Good advice, but a reaction block might be a little pricey for some. Alternative. Get some inexpensive rubber padded vise jaws. I clamp my REs into the padded jaws firmly, and canted so that the stock position track is braced against one face of the jaws such that it will not rotate when the castle nut is tightened. Then it's just a matter of tightening/torquing down using whatever wrench you use.

[dentron]

Good advice, but a reaction block might be a little pricey for some. Alternative. Get some inexpensive rubber padded vise jaws. I clamp my REs into the padded jaws firmly, and canted so that the stock position track is braced against one face of the jaws such that it will not rotate when the castle nut is tightened. Then it's just a matter of tightening/torquing down using whatever wrench you use.

This is a good cheaper alternative to the geissele