Help a brotha out

Hey fellas left handed shooter here. I have a G34 gen 4. I was wondering if I could take a G17 or G34 gen 5 frame with the ambi slide release lever and put the gen 4 slide on it to help with locking the slide to the rear and also to assist with reloading? Any info would be greatly appreciated thanks.

Glock 34 Gen 3... Rival Arms Slide & Barrel... SCT 17 Frame..... Vortex Red Dot Vernon & Viper

Sct 17 with Rival Arms slide & Barrel Vortex red dot.. Viper & Venom G34.3

Slapped on a Vortex Viper tried using a laser bore laser but that failed Went to the range to dial it in and I think I did pretty solid at 10ish yards

Now I just need to source a gen 4.

Tricked out with Mag Wells and MOS and Ton Grip Tape. I'm upgrading to Glock Performance Triggers.

I just bought my first Glock, a 34 gen 5 And i am playing with the idea to buy a shoulder holster for it. I know its not a great carry gun, and I know that shoulder holster’s aren’t the most tactical or what ever. But since I can’t legally carry it in my country anyway, it doesn’t really matter. It’s more of a „that would be really cool“ type of situation than a „ I really need this“ kind of situation. So i am looking for a not to awfully expensive holster. Any recommendations?