Gas tube question

[MarkyMark80]

So I'm building my first AR and I bought a YHM specter gas block and I have a High Standard gas tube. It appears I'll need to hammer the gas tube into the block as either the tube it too thick or the hole for the gas tube is too narrow. Is this normal???

[SpankMonkey]

No it is not normal. Gas tubes are cheap work on the tube with sand paper. If you have to remove a lot of material contact the company and get another tube. if you have another tube on hand check to see if it is the block or the tube that is the problem.

[jet66]

Sometimes you'll need to do a little cleaning somewhere. I just put together a rifle using a DD bbl w/pinned-on GB. The GB needed a little emery cloth work on the inside to get the gas tube (from BCM) to fit. I just cut a small piece, rolled it in to a tube with the abrasive out, and turned it by hand inside the GB It is normal for it to be a little snug, but you shouldn't have to beat it in.

I have used a YHM Specter GB before, with a black finished YHM gas tube, and I recall having to do something similar, including smoothing out/sanding down the gas tube at that end. Since the gas tube was finished, I don't know if it was more the tube or the gas block.

[MarkyMark80]

Thanks guys!

[markm]

You can clamp the gas tube in a vice. Those things are pretty strong..... and work the block onto the tube.

Hammering on the gas tube is a defnite no go.