Meet the Solo 300
To eliminate the action noise while trimming weight and parts, the AR-framed handgun uses a hybrid polymer lower and upper (with metal inserts) and, rather than being semi-auto, is manually-operated. Without the need for a regular BCG, he says he uses one that is basically cut in half and drilled and tapped for the left-side charging handle. At the same time, he still has all of the modularity of a standard AR when it comes to triggers, parts, magazines, etc.
The inventor of it says, “I like to think of it as a Thompson-Center Contender that costs half as much, weighs a third as much, holds 10-shots and reloads at the flick of a wrist.”
The 411 in my column at Guns.com