meh...
They were developing it along with Maxim and showed Maxim's version for all the hype, and then at the last minute, they released their version which affords no functional advantage over an SBA3 and costs/weighs a lot more.
Maxim's brace is actually shorter collapsed than a standard stock/brace, which is the point of a PDW. SB's version uses a standard length buffer tube (which is advertised as a benefit because it doesn't require proprietary buffer/spring), but that also means it is, by definition, as short as anything else that uses a standard buffer tube, so whats the point?
So the only people that buy them are the ones that want the PDW "look" but don't want to buy the braces that actually offer that functionality.
Here's a comparison of the SBA3 vs the SBPDW both fully collapsed.
Attached FileIf you want a shorter pistol when collapsed, go all the way with Maxim's version. If you don't care about the mp5-esque dual arm design, CMMG's ripbrace is a cut-down SBA3 on a short tube a la UCIW, which is quite short as well.
Attached File Attached File