Benelli CB-M2 caseless submachine gun

[Cutaway]

It may be 1980s dated, But still may lead to a more advanced weapon. Its demise was the lack of customers, funds, politics?

Was it any how reliable/accurate/powerful? or too advanced for the time?

http://www.securityarms.com/20010315/galleryfiles/3200/3252.htm

http://cartridgecollectors.org/cmo/cmo07apr.htm