Have you noticed any consistent difference in accuracy between the GEN3 and Gen 4 Glock 20's? I'm debating between Glock 20 SF and the 20 GEN 4. I was leaning towards the GEN 4 because of the double recoil spring system and the improved accuracy I've seen in the 9 mm gen 4's.
On the face of it, I prefer the Gen 4. However, there have been rumblings of function issues in some Gen 4 20's. Probably Google-able. My Gen 4 20 and 29 have run, but I don't have high round counts on either. Have not heard of systemic issues with the SF.
Likes pretty much everything in every caliber.
While cruising through stuff, looking to see if we had a rimfire thread, I found this post.
I no longer have this OD Gen 3 G20. It was a great gun, and shot virtually anything I fed it.
This is a pic in the Frank Church Wilderness, along what is known as the Magruder Corridor road.
Shown on my trusty steed: