@thendrix I wouldn't call Glock perfection.
Mill the frame from stainless, fix the barrel in place and incorporate a roller-delayed blowback slide with guides in the frame.
That would be a fine sidearm. The slide velocity would be reduced so better optics could be used. Precision would be better.
Glock also sells horse semen now.
@thendrix I am a fan of fixed barrels in pistols. It's not that other designs can't get close to the same results. It's just difficult to mess up the accuracy of a blowback design.
(God why does a hi-point put my 800 dollar 1911 to shame?)
The roller system would help more with recoil when larger or faster rounds are used. H&K used stamped steel receivers in the G3. The bearing surfaces were milled but that's all that the system really needs.
It would be difficult to mess it up and it would be a very durable design. The weight would be noticeable but it would last a long time before it gets out of spec.
The Alien is impressive but the roller-delayed blowback system in a sidearm would turn heads. The slide would need to function similar to a bolt. Having the frame extending into the slide would be necessary but it would still work. So the slide would be like a bolt with the extended frame acting like the receiver. The inverse could also work and it might work better.
It would just be an interesting pistol and a fun project. If the ramps are in the slide, the caliber could be changed by replacing the barrel and slide.
It just seems like the natural progression of things. There's a rotating barrel system, a gas piston system but I have yet to see a roller-delayed system in a pistol. It's likely because it would be expensive like even more so than the MP9, CETME and G3.