BCG question

F

frigate88

New member
Just picked up a bushmaster off this old man for pretty much nothing. When I was checking it out I pulled the bcg out and he had it lubed with grease. Never seen that. I never use grease in any of my AR's. Does any one else do that or seen it? I somewhat remember reading something like this, but not quite sure if it was in an AR.
 
I'm not much help since I don't have an AR, BUT it sounds like people DO use grease. It's talked about in the "AR15 Chamber" thread...just a few threads down from yours.

J
 
I used to use wheel bearing grease. Until I was shooting in really cold weather. (for us anyway:D)

A little bit of grease came off the cam pin and it slowed down the firing pin travel enough that it wouldn't ignite the primers on XM193.

It took me about 15 min of sticking the FP in and taking it out and wiping it off to get enough of it gone that the rounds would ignite. I never had that happen in warmer weather.

I don't use grease now on ARs.

I just use CLP or motor oil.

Slip EWL is highly recommended by people who know more than me, but I have never used it.
 
That's what I was concerned about was the grease blocking the firing pin. I'll leave it and see what happens when I take it out for our first date. :D.
 
I grease the BCG but its only very lightly greased. Basically I apply the grease then wipe it down till I can barely feel the presence of the grease. Thousands of rounds through my AR rifles and no problems with it regardless of weather conditions.
 
I grease the BCG but its only very lightly greased. Basically I apply the grease then wipe it down till I can barely feel the presence of the grease. Thousands of rounds through my AR rifles and no problems with it regardless of weather conditions.
Click to expand...

I think I got sloppy putting it on and a glob got into the hole through the cam pin and I didn't notice it. I still sometimes put some grease on the BCG rails, but I don't use it to lube the BCG internals.
 
Bolt Carrier Group.

Clean the grease off and drench it in CLP, or Slip 2000, or Mobil 1. Save the grease for a Garand
 
It seems there are a lot of different approaches and techniques for lubricating an AR-15..... And most seem to work. The common theme seems to be that the weapon will function as long as there is some lube, of some kind, on the BCG bearing (sliding) surfaces, the cam pin, the locking lugs, and the gas rings.

A fair number of people do use grease. If grease did not work, people would not use it. However.....

Crow Hunter's experience with cold weather is very informative. If I was going to use a grease, I would do what he did and verify my weapon's capability at low temperature..... which is why I use CLP. It may not be the best, but it has been battle tested for many years by hundreds of thousands of soldiers and marines.
 
Mike Irwin said:
Oh. OK.

Uhm... I knew that.... yeah....



Thanks!
Click to expand...

Mike, was that your first senior moment? Heck, I have them every day!:p


I use either Tetra grease or Lubriplate 135A on the bolt carrier rails that contact the upper receiver. In cold weather I stiffen up and stop functioning before the gun does.
 
You must log in or register to reply here.
Back
Top