Mack Gwinn Industries, the inventor of the Marck-15 Hydra weapon system with modular mag wells and quick change barrels for multiple calibers, and the licensee for the Valkyrie belt-feed system, [which itself was a revival of the Ciener light machine gun,] has publicly expressed interest in the Bushmaster pistol. Mack Gwinn, Jr, founder of MGI, was the primary developer of the original Bushmaster pistol, which later went to the Bushmaster Firearms company, had a rifle variant, and merged with the Edenpine SAK-30 to become the Bushmaster M-17S bullpup rifle. Whew, that was a handful.
Duncan Long's AR-15 Sourcebook said that Bushmaster and Mack Gwinn developed the Bushmaster pistol on their own, and which later evolved into the M-17S rifle. However, other sources such as Small Arms Review's article as well as Guns.Ru stated that the M-17S directly descended from the Armstech/Edenpine SAK-30. The original Bushmaster pistol does not appear to have the tensioned barrel that M-17S has, so perhaps M-17S inherited the barrel from SAK-30, and the receiver/fire-control/bolt/bolt-carrier from Bushmaster Pistol. All three used the gas system from the AR-18.
In any event, MGI said that they want to bring the Bushmaster Pistol back into production, which is great news! [You can find the announcement in their Facebook wall photo album.] In an earlier ('07-'08?) private correspondence with their marketing rep, they had expressed interest in reviving the M-17S at a later date. Perhaps the time has come for this bull-pup design. I hope they bring back the M-17S and the pistol together, but either one would be great. Given their Hydra mag-wells and quick-change barrels, perhaps MGI can add these features into the new gun. Guess I need to start saving money now! :D