Why not even a conversion? If HK copied FN and produced a 4.6 pistol and then sold their PDW as a pistol in the US market they could make stupid amounts of money right? Why did they never do this. FN fan boys are lining up to spend 1200-1400 on a PS90. You'd think that HK would do the same. Are they just butthurt that Nato chose the 5.7 over 4.6 or is it that 5.56 PDW are filling the market niche so well its more trouble than its worth?