One of the members in our gun club recently bought a Bushmaster
M17S Bullpup carbine, and I had the opportunity to shoot it
recently.
As I recall, the trigger was pretty awful (it felt very "spongey"
and had an indistinct break), and the pistol grip was raked a bit
too far forward for my
comfort. But it seemed to be pretty accurate (I managed a sub-4"
group at 100 yards with a standard red-dot sight).
However, I was exceedingly uncomfortable with the
fact that the firing chamber was RIGHT NEXT to the
shooter's head. On a conventional AR-15, the firing chamber is
located at the front of the upper receiver, some distance from the
shooter's face, where a chamber rupture (caused by an overcharged
cartridge or obstructed bore) would probably not cause any
injuries. On a Bullpup design, if the chamber lets go, I wonder if
the shooter will get a faceful of shrapnel.
MG