I would agree with you if the these Turkish guns were better made and had replacement parts availability -- it seems every importer's batch is a different "model" with few parts interchangeable among them with zero effort to make replacement parts available.
I loved my SDS BP12, I could mow down 6 steel plates with it faster than I can with my 9mm "duty sized" pistol. I had some issues with it initially, they fixed it under warranty paying the shipping both ways, they wouldn't tell me what they did to fix it, but I was extraordinarily happy with it until this happened after a bit over 500 rounds through it:
View attachment 1122759
Note the crack where the threaded section for the barrel nut mates with the upper. Rendered the gun completely non-functional and I got this as "technical support" from SDS Systems:
"We no longer import the M12 so if the part is not listed on the website it cannot be sold either. We have to request warranties from our manufacturer and can only do so if the customer has a receipt that is within warranty. There is nothing I can do."
Other than a few buckshot rounds initially, I've never shot anything other than 1 oz to 1-1/4 oz 2-3/4" "low brass" shells, mostly Federal "Top Gun" 1 oz loads.