this link to wikipedia has an article on the model 19 semi-auto 40mm grenade launcher, commonly called the "forty mike mike" by united states marines. it has been used extensively by american military forces for over 40 years.
now, apparently, under the aegis of the obama administration it is to gain a proud tradition in this country in civilian crowd control, as well.
we are (evidently) to become a tin pot dictatorship, so you should get used to identifying & seeing on the american boulevard those weapons used by tin pot dictatorships to keep the "unruly" "ruly." (i believe it likely any day now that obama will begin to wear a field marshal's uniform, festooned w/ ribbons and decorations. a rainbow coalition flag, for instance. maybe he could pick some up cheap from chavez's widow, or boyfriends, or, whatever.)
it has been only recently that american "law enforcement" officers have taken to wearing masks to hide their identity. at first i found this repulsive, but, in matter of fact, i now view it as a highly useful tool to separate those who might be considered as having an adversarial interest against us, from those we might consider "innocents."
sort of a reverse "profiling," if you will.
john jay @ 10.16.2013
p.s. you should understand the importance of being able to aim and fire quickly under "field" conditions. you do not have the luxury of dwelling over the minutia of sight pictures, breathing, ... , well, etc. & yada yada.
i am also proposing that we adopt a new standard of "field" targets. instead of using a silhoutte target, i suggest that we all use a target about 5.5 to 6.0" in diameter, and become proficient at hitting center mass at all usual and accostumed ranges, and become especially proficient at shooting prone, as it offers the most stable of all field positions. it has the added virtue of concealment, and presenting the smallest target to whoever might be shooting at you.
simulated. or, real.
something to consider.