A few "greatest hits"...
The "Street-Sweeper" 12ga, the USAS 12ga(used by Steven Seagal in On Dangerous Ground,
www.imfdb.org ), the SPAS-12 12ga(semi auto and pump,
) that just never caught on except in Hollywood. The Mossberg Bullpup 12ga was slick too.
The .40Super pistol caliber.
And finally, the most missed, best designed firearm is the ASP 9x19mm by Paris Theodore.
The ASP 9x19mm based on a S&W model 39 series pistol was light years ahead of other models. Theodore was a spy weapon genius. Bond used a ASP in a few 1980s era James Bond novels. A ASP sidearm was also toted by the head of security at the US Embassy in Saigon South Viet Nam in 1975.
ClydeFrog