Polishing 870 action and internals

One quick way to do it is to load up the action bars with valve grinding compound... then just rack rack rack away the grittiness. :)

I actually did this once before on a particularily rough HP9. Worked surprisingly well!
 
canucklehead said:
One quick way to do it is to load up the action bars with valve grinding compound... then just rack rack rack away the grittiness. :)

I actually did this once before on a particularily rough HP9. Worked surprisingly well!
Click to expand...

There aren't any concerns with tolerance issues with this method?

(did I just apply the words "tolerance issues" to a Norc? :) )

If not, this has to be one of the greatest bits of info to apply at your own risk sort of thing!.
 
I parkerized an express myself. I just assembled it with everything heavily greased and worked the action a bazillion times while watching tv. Then take it apart and clean the grease off, and reassemble. Voila, Wingmaster smooth.
 
Cyanide Ride said:
There aren't any concerns with tolerance issues with this method?

(did I just apply the words "tolerance issues" to a Norc? :) )

If not, this has to be one of the greatest bits of info to apply at your own risk sort of thing!.
Click to expand...

Haha I didn't notice any 'sloppyness' afterwards if that's what you mean. :) I didn't do it for hours. Really just made the contact surfaces 'mate' to one another.
 
Duke878 said:
Anyone have any DIYs on this? I've seen one or two on YouTube, but they're mostly just to get the bolt carrier shiney... I want it for function not necessarily looks. Thanks!
Click to expand...

To be clear, it's not at all necessary, and the most commonly recommended way of smoothing them up is shooting them a lot.

But I'm a tinkerer, maybe you are too, so here's what I do: Clean the gun, degrease completely, and rack the snot out of it (maybe 100 or 200 or 300 times). Then, take it apart and you'll see where it's wearing. Take a good, flat stone to the forend rails (the arms that slide inside the receiver). Those pieces are stamped, iirc, so you can do a fair bit of good work there. But yeah, you don't want to significantly redimension them, so use a fine or extra fine stone. Use stones to preserve the 90 degree angles, there's no advantage to rounding them off. Don't mess with the cutouts and features on those arms unless you know what you're doing - Just take the four sides of each arm as a whole. Take a similar approach to the bolt and carrier (look where it's wearing, and do some careful polishing).

It's not rocket surgery. Just stay the heck away from anything associated with headspace: Bolt face, bolt latch, and barrel hood notch. And the shell latches, don't touch them unless you understand timing.

To improve comfort, I also chamfer the mouth of the ejection port and the loading port. Those Express receivers are SHARP!
 
You must log in or register to reply here.
Back
Top Bottom