I have the Sig 762 SRD Ti QD . I could not be happier in regards to performance in 300 blk and 5.56 SBRs. So much in fact, I may get the steel 762 can for my 10.3 sbr 5.56. Decibel reduction rating is awesome and the "tone" seems substantially different in a good way. I haven't experienced "first round pop" with mine. I believe this has to do with the increased internal volume of the silencer. A good amount of R&D( not just a regurgitated design) went into this by smart people. Cons: They are fatter. Getting the adapters, at first, was hit and miss.