I tried search but found nothing...Ive been thinking about getting a 300blk pistol and I found the Sig MCX 300blk pistol.

After researching it and finding out about the bcg recall and that now aftermarket triggers no longer work in the MCX and some are now reporting the new bcg is not as good as the original and showing odd wear in the receiver and so forth I'm re-thinking this.

I had liked the Sig MCX because is had a piston and adjustable gas block for shooting suppressed.

I found Adams Arms is piston and adjustable gas block
http://www.adamsarms.net/95-upper-xlp-evo-300blk

I found a Seekins upper DI with adjustable gas block
http://www.seekinsprecision.com/part...et-10-5-1.html

Maybe a DI is the way to go due to availability of parts and nothing is proprietary for future parts replacement?

Any other suggestions?