Questionable gas block pin

**AAMP84** · 01-17-23, 00:18

I just bought a barrel off the EE over on TOS, and they appear to have drilled to low on the gas block for pinning. I'm not worried about the barrel because the pin is so shallow into the barrel material, but should I replace the gas block and have the pin redone when it arrives?

https://imgur.com/a/I850xWQ

**GH41** · 01-17-23, 04:22

I wouldn't.

**markm** · 01-17-23, 07:50

Originally Posted by GH41

I wouldn't.

Same. I would't pin a low pro gas block at all, but I'd definitely dimple and set screw it.

**HKGuns** · 01-17-23, 09:09

Nope. Just shoot it.

**AndyLate** · 01-18-23, 06:41

Judging from the pics, there is plenty of pin in the barrel. It really does not take much and this is not a case of more is better. HK is spot on - just shoot it.

Andy

**markm** · 01-18-23, 09:48

Originally Posted by AndyLate

Judging from the pics, there is plenty of pin in the barrel. It really does not take much and this is not a case of more is better. HK is spot on - just shoot it.

Andy

Agree. Less it more according to the barrel manufacturers. WOA claims aggressive pinning messes up barrel harmonics.

**26 Inf** · 01-18-23, 23:44

Originally Posted by markm

Agree. Less it more according to the barrel manufacturers. WOA claims aggressive pinning messes up barrel harmonics.

I've used the Geissele Super Gas Blocks in carbon steel from ALG on most of my builds. I've always done the 'bomb proof' installation process using the supplied coil pin. Having said that, I can see White Oak's point. OTOH, what does pressing the barrel up against the top of the gas block in two places with the set screws do to barrel harmonics?