Installing Yankee Hill Low Pro Gas Block On Spr barrel

[Samson]

I've used a little 600 grit sandpaper just rubbed by my finger on the inside of my last 2 lo pros from YHM. Dremel might be overkill, it doesn't take much to get it on there.

[WASSMAN]

I've used a little 600 grit sandpaper just rubbed by my finger on the inside of my last 2 lo pros from YHM. Dremel might be overkill, it doesn't take much to get it on there.

i agree. But if you need to cut alot of material i would start with a lower grit and move up as i get closer to final dimentions.

[6.8aldwin]

Put your barrel in the freezer and heat up the gas block over the stove. I didn't actually have to freeze my barrel, but that is an additional measure. It slid right on.

[JDeere7296]

Put your barrel in the freezer and heat up the gas block over the stove. I didn't actually have to freeze my barrel, but that is an additional measure. It slid right on.

Thats a good idea. I've used that method to install bushings in bearing assemblies before.

[Maryland_Shooter]

Put your barrel in the freezer and heat up the gas block over the stove. I didn't actually have to freeze my barrel, but that is an additional measure. It slid right on.

Bingo!
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[carnaby]

Put your barrel in the freezer and heat up the gas block over the stove. I didn't actually have to freeze my barrel, but that is an additional measure. It slid right on.

That will work to get it on, provided you don't hesitate and let the barrel warm up and the gas block cool down (they will exchange heat you know). Only problem is that should you need to remove the gas block you will mess up your finish.

Easiest method is to get some 400 to 250 grit paper, wrap it around a dowel in a hand drill so that it fits snug in the block and run it for a moment or two. You can remove a half thou at a time this way. Keep taking a smidge off and trying it. When the gas block slides on you're done. Everyone but PRI makes their blocks slightly under size.

Two problems:

1. I can't make my barrels any smaller in diameter as they are spec'd for Ops Inc silencers which require tight tolerances on the barrel dimensions

2. I sell in bare stainless, bead blasted, and coated, so I can't bring the dimensions down to make up for coating as not all barrels are sold this way.

So, long and short is that low pro gas blocks are a pain to install, except for PRI, but then the PRI gas blocks are usually too tight for the gas tube, argh!

[Maryland_Shooter]

That will work to get it on, provided you don't hesitate and let the barrel warm up and the gas block cool down (they will exchange heat you know). Only problem is that should you need to remove the gas block you will mess up your finish.

Easiest method is to get some 400 to 250 grit paper, wrap it around a dowel in a hand drill so that it fits snug in the block and run it for a moment or two. You can remove a half thou at a time this way. Keep taking a smidge off and trying it. When the gas block slides on you're done. Everyone but PRI makes their blocks slightly under size.

Two problems:

1. I can't make my barrels any smaller in diameter as they are spec'd for Ops Inc silencers which require tight tolerances on the barrel dimensions

2. I sell in bare stainless, bead blasted, and coated, so I can't bring the dimensions down to make up for coating as not all barrels are sold this way.

So, long and short is that low pro gas blocks are a pain to install, except for PRI, but then the PRI gas blocks are usually too tight for the gas tube, argh!

I'm real careful with dremels. I'd advise some 200, 400 sandpaper, folded into 1-2" strips and used like an old shoe shine cloth in a buffing motion, run it down with the 200, then dress it up with the 400. Maybe 30 minute job tops.