No experience with the posted Piston System sorry but purchasing a matched Air Seal Set ‘ready to go’ provides some cost savings as well as reducing some hassle sourcing the parts group. From here they look fine, all the right bits in all the right places, but certainly don’t leap from that statement, hmm, not much help really when I think about it.
I like your Bull-Pup Xetarat, I still haven’t decided with my ‘big build’ whether to run the inner barrel right up to the end of my chosen Suppressor or to have the Supp ‘free air’, any thoughts, any experience, any one, apologies to you OP. My UMP I have the barrel end at the Muzzle then the Supp attached, with a homemade double foam construction Baffle System that works wonders for the Sound Report, obliviously not the Mech Box, but the report has been muffled and dampened heaps, much much better, mmm, Supps, my favourites.
I was there (virtually) every step of the way when the Magpul Masada was created, known now as the Bushmaster ACR and can’t wait to get the Blaster equivalent with it’s solid reputation, low entry cost and the many upgrades, mild to wild, that can be had, I haven’t yet even held one, let alone sighted one.
Create a list AlienCrustaceanCrab, nice handle you have there, it seems you are doing so. Grab a large mixing bowl, throw in your budget, stir in your desired Blaster platform, weigh out the pros & cons, sprinkle in some end user reviews, a dollop of recommendations, add a few drops of past experience, combine all with future mods & upgrades potential, mix, mix, mix, bake for a week or two and hopefully the resulting dish will be all you seek.
Good Luck narrowing it down and choosing a single Blaster from ALL the current offerings, every where you look there’s another you want, just one more.
Anyone know what Kamchop was referencing above, SAGA, search-fu compromised, need to know so as to load just the right amount of cowshit for a return of fire.