Will a G40 Complete Upper Fit and Work on a Gen 4 G20 Frame?

[4949shooter]

I asked this question on another forum but I haven't gotten a definitive answer as of yet.

I have made up my mind that my next 10mm will be an all steel gun (this will undoubtedly make Intercooler happy  ). Though, I would like the long slide capability in Glock. I am thinking of getting a G40 upper for my Gen 4 20 frame. I was just wondering ahead of time if it will work.

I know they won't be available for a while.

Thanks.

[Intercooler]

Doesn't the aftermarket already have long slide setups for it?

[4949shooter]

Yes. Lonewolf does, though I think they are compatible with Gen 3 only?

I could slap a LWD on my Gen 3, though I would rather go with the Gen 4 Glock system.

[DM1906]

Yes. Lonewolf does, though I think they are compatible with Gen 3 only?

I could slap a LWD on my Gen 3, though I would rather go with the Gen 4 Glock system.

They work fine with Gen 4 frames. Gen 3 RSA's only, though. The additional slide mass minimizes/negates the composite spring advantage. The open-top long slide is still heavier than the OEM 4.6" slide. If you don't want a heavier slide, there are a lot of creative methods to lighten it.

[4949shooter]

Thanks.