YES! Let’s start with the HK416 as a baseline. Controls and magazines compatible with existing weapons to minimize retraining, short stroke piston operated for improved reliability over direct gas impingement, and able to accept all current M4 accessories.
that or the sig556. basically the same thing. accepts m16/ar15 mags, some accessores.
Another H&K fanboy! (let the flame commence!)
Chamber the HK416 for 7.62x39 and 7.62x51 with all lowers being completely interchangeble and as many as possible upper rec. parts being interchangeble as well. I’m a huge fan of HK design, build, mystique, reliability etc. Remember the all the cool HK ads back in the day? For that matter, re-design a partial polymer HK93 or 91 in order to reduce weight. Why do spook types dig the MP5 etal.? It’s basic operation is very reliable, as long as it is manufactured to HK spex.
Just my dbl. tap..