There is a good review of them on snipers hide
https://www.snipershide.com/shooting/threads/ks-arms-sar-3lug.7014192/
I run both a 2 lug 6.5CM and 3 lug 6dasher and haven't had any problems with them even firing in the dirt and fine sands. I did break a firing pin on the 6dasher but the customer service has been awesome. I do believe it was my fault with fire forming the brass, had a few popped primers.
https://www.snipershide.com/shooting/threads/ks-arms-sar-3lug.7014192/
I run both a 2 lug 6.5CM and 3 lug 6dasher and haven't had any problems with them even firing in the dirt and fine sands. I did break a firing pin on the 6dasher but the customer service has been awesome. I do believe it was my fault with fire forming the brass, had a few popped primers.