Yea smart parts went out of business then kind of reopened under GoG paintball. They are going to start selling all the same stuff again. Like ion, vibe, sp1, blackheart boards, lube, just under different names.
"Can't change the world less we change ourselves."
Also, if you check out G.I.Milsim, you'll see .50 cal versions of SP/GoG markers. Pretty sure the "Micro" is going to be the "Extasy" that is still "coming soon" on the GoG site, well either that or the Nano (which looks like a mix of the Impulse [in grip regs], the shocker [grip frame and upper body design], and the Ion [bolt system]).