Tungsten
Ultimate Member
I recently bought a KVP handguard and it came with an aluminum adapter that screws onto the receiver threads. It then has a separate steel barrel nut that screws onto the adapter. The barrel nut doesn't touch the threads of the receiver. The instructions say absolutely nothing about using anti-seize, but it does explicitly say to use locktite on the barrel nut.
So my first go around, I used antiseize on the upper receiver threads, screwed on the adapter, then tightened down the barrel nut with locktite. Attached the forend. After a day of letting it cure, I grabbed the forend and could easily twist it until the gas tubed stopped the twisting.
So what would be your advice on what to use where? The adapter is aluminum. The nut is steel. The other odd thing is that the adapter does not scew tight to the upp receiver. It is 180 degrees to the gas tube when finger tight. So unless I use a shim, there is no way I am getting it properly positioned. Should I use a shim?
In the pic, the adapter is to the right. It comes with a gas tube alignment pin to keep the adapter properly positioned when torquing down the barrel nut.
So my first go around, I used antiseize on the upper receiver threads, screwed on the adapter, then tightened down the barrel nut with locktite. Attached the forend. After a day of letting it cure, I grabbed the forend and could easily twist it until the gas tubed stopped the twisting.
So what would be your advice on what to use where? The adapter is aluminum. The nut is steel. The other odd thing is that the adapter does not scew tight to the upp receiver. It is 180 degrees to the gas tube when finger tight. So unless I use a shim, there is no way I am getting it properly positioned. Should I use a shim?
In the pic, the adapter is to the right. It comes with a gas tube alignment pin to keep the adapter properly positioned when torquing down the barrel nut.