>>64223092
H&K should bring back the MP5/10 and MP5/40 as semi-auto pistols (complete with the LRBHO) in time for when SBRs get challenged and maybe even deregulated.
Imagine an MP5/10k, with the sweet vertical foregrip and the PDW style folding stock, where it locks open for you, you swap the mag and hit the release, and it's ready right away. Maybe you're even using a pair of clamped together mags for even faster reloading.
Now imagine replacement lower with a selectable FRT setting.