Staked Castle Nut...

[flatapple]

I would like to install a Magpul ASAP on my Colt carbine.

But I have noticed that the Locking Nut appears peened.

Would I be able to install the sling attachment or does someone with gunsmithing skills need to do it?

[bkb0000]

got a castle nut wrench? just gotta man through it.

[DaBears_85]

...Would I be able to install the sling attachment or does someone with gunsmithing skills need to do it?

You can do it yourself. You need to buy a castle nut wrench, Brownells is an excellent place to start. Be advised, It's gonna take a shit ton of tourqe to break the staking. Start by placing the lower in a padded vice. Next, attach the wrench and slide a steel pipe over the handle for more leverage, then pound on it with a hammer. Let me know how it turns out.

[bkb0000]

Start by placing the lower in a padded vice.

start by placing the receiver extension in a padded vise... leather works good. you don't want to smash your lower in the vise, nor is it ever a good idea to put that much torque on the magwell.

[DaBears_85]

start by placing the receiver extension in a padded vise... leather works good. you don't want to smash your lower in the vise, nor is it ever a good idea to put that much torque on the magwell.

Good point. When I worked on mine I was very careful as to put just enough pressure on the lower to keep it in place, though I never thought about the amount of tourqe that would be excerted on the magwell. She still works flawlessly, so I guess I got lucky. Anyways, thanks for correcting me. I definately wouldn't want to be responsible for ****ing up this gentlemans rifle.

[az doug]

If you have a small punch you can peen some of the metal back away from the castle nut. Then you would not have to use as much force to loosen it.

[Iraqgunz]

I would actually use the upper receiver vise blocks rather than put the lower receiver extension in a vise, padded or not.

start by placing the receiver extension in a padded vise... leather works good. you don't want to smash your lower in the vise, nor is it ever a good idea to put that much torque on the magwell.

[bkb0000]

I would actually use the upper receiver vise blocks rather than put the lower receiver extension in a vise, padded or not.

esplain, por favor

[tarkeg]

esplain, por favor

I'm confused also. Doesn't the upper have to be seperated from the lower to use the upper receiver blocks? Que no?

[rockm4]

If you have a small punch you can peen some of the metal back away from the castle nut. Then you would not have to use as much force to loosen it.

Hello all, He's right with a small round steel punch drive the indented metal back onto the receiver tube lock. If you are prone to slipping then put a couple of raps of tape around the area to protect it from tool marks .DON'T get in a hurry and it will be a lot easier to remove the nut. If you are going to do many other modifications to your weapon then buy a good quality armors wrench . DPMS makes one and brownells sells others to. THE no.1 rule in gunsmithing is to take your time and be careful its all pretty simple. Patriot