I found it.might be, would be cool if so. I know they were talking about copying some of the aftermarket HK pro wedge tunbing kit things with different wedge angles.
I found it.might be, would be cool if so. I know they were talking about copying some of the aftermarket HK pro wedge tunbing kit things with different wedge angles.
I found it.
They share some parts, which is a good thing.Yep. That looks like the H&K system
No. Roller delay uses mechanical advantage to increase the acceleration of the carrier mass. This makes it effectively heavier and unlock slower. Its simply a clever way to avoid really heavy BCGs banging around. The spring rate has almost no effect on recoil bolt/carrier speed. There is an excellent treatise on the math someone did recently on weapons guild to compute the mechanical advantage.True Roller delay has a mechanical advantage through a wedge to compress the main recoil spring/s at a higher rate to delay the blowback phase, then unlocks and a lower rate to complete the cycle.
No. RDB works the same as roller delay. It would still work in a frictionless environment. The ramp angle on the cam pin causes the carrier to accelerate backwards faster than the bolt, increasing effective mass. It just activated by twisting radially vs pushing rollers in a straight line.The CMMG RDB uses friction instead of a mechanism to increase rearward travel against the spring.
No HKs are roller DELAYED, not roller locked. After ignition, the bolt start unlocking almost immediately like any pure blowback. Its just opens slower. All blowback systems do have to overcome the spring pressure first but its a tiny effect compared to the BCG acceleration forces.The H&K won't unlock until the pressure in the chamber drops allowing the rollers to release.
it does...once..No. It doesn't fold.
Roller-Delayed Buffer System | Scheel Manufacturing
USPSA PCC 9mm ar15 roller- delayed buffer system. less recoil, faster split times. Roller-delayedscheel-mfg.square.site
They are selling it on their siteThere is also the roller delayed Mean Arms:
SHOT Show: Roller Delayed Blowback AR-9 From MEAN LLC - The Truth About Guns
◀Previous Post Next Post▶ I feel lucky to have stumbled upon this at SHOT Show, because I was extremely impressed by the engineering and machining of the MEAN LLC delayed blowback mechanism and immediately attempted to sweet talk my way into a complete upper receiver loaner for review...www.thetruthaboutguns.com
And the Angstadt ARMS MDP-9 (which is also still vaporware AFIAK. THey haven't responded to us w/ any useful info on if different locking pieces for tuning will be available.)