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The Small Arms Thread, Part 8: 2018; ICSR to be replaced by US Army with interim 15mm Revolver Cannon.


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   Max Popenker with new civilian revolver-carbines based on RSh-12 assault revolver, from Army 2021.

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   MTs-569 on top, in 12.7x55 (5 shots), MTs-570 below, in 9x39 (6 shots). 12.7 is 3kJ bullet from this carbine, lol.

 

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   Max claimed that recoil was not discomforting on 12.7, and on 9x39 he called it "toy-like". Reason is that those revolvers have ability of whole upper part of gun to move under recoil forces.

   Also:

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   When rolling back, only the inner spring of the firing mechanism is cocked, acting in parallel with the trigger spring, which makes it possible to reduce the force on the trigger when firing self-cocking. 

 

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   Obturation of the joint of the front end of the drum (firing chamber) and the breech of the barrel is carried out using special insert sleeves located in the front of each chamber, similar to aircraft revolving cannons. When fired, the sleeve is pushed forward, blocking the gap between the barrel  and the drum. 

 

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   RSh-12

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  • 2 weeks later...

   AM-17 prototype first look from user side.

   Pluses - weight (2.7kg with red dot), big ass monolitic rail on top, ambi selectors, adj. stock that folds to the right and doesn't interfere with ejection port, use of AK flap for magazine release (muscle memory, training), ability to eat all mags for AKS-74U, ability to put charging handle on left or right side, ability to partially disassembly without messing with optics/zero of sights. SVD-alike short piston system makes it run much cleaner. 

   Negatives - barrel doesn't accept commercial/aftermarket suppressors and muzzle devices, standart muzzle device doesn't work well as compensator or flash hider, no suppressor in a kit of this gun. Main negative element of this gun is recoil, it "kicks", and this kick is somewhat comparable to 7.62x39.

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