So, there is this little cartridge out there, the 5.7x28mm, which FN Herstal makes for the P90 (and civilian legal PS90), as well as the Five-seveN handgun. Now, I don’t know how many people have argued the effectiveness of the 5.7mm cartridge back and forth on the internet, but I’m pretty sure that there is a joke about monkeys and typewriters in there somewhere.
The thing is that whether or not it’s an effective anti-personnel round, the 5.7mm round does out perform the .22 Magnum to 150 yards in terms of terminal ballistics, and it fits into a package much smaller than a .223.
I know you’re busy cranking out SR-9s and all that other cool stuff, but maybe just maybe you could take a second to make an upscaled 10/22 chambered for 5.7mm, or downscale a Mini-14 for the round. I know I’d buy it, and I’m betting a lot of other people would buy it as well. Gun people like new stuff – I mean sure, there are plenty of hide-bound traditionalists who want nothing other than a .45 and a .30’06, and that’s fine; there are also lots of people who want the latest and greatest plastic guns with whizbang accessories.
P.S. Could you also maybe build an SP101 chambered for .22 Magnum while you’re at it? That would sell like hotcakes.