https://youtu.be/nIbY6lo0RIw

Here’s an expert explaining it better.

See my comments below. I’m pretty convinced he was manually cycling his slide because his suppressor, whether homemade or street sourced, lacked a Nielsen device or “piston” or “booster”

It’s A LOT to learn, and has been a primary interest of mine for a couple decades, so I love sharing. I also love your big pp energy for updating the original comment.

Edit: decades not days

I’m also of the mind that knowing the limitations of his setup, he trained around his need to manually cycle his weapon. In the video, he did so smoothly and efficiently without any perceptible panic in his movements.

I don’t want to be a hater, but you’re wrong about a lot of things in this post. Supressors do not slow a projectile, and in most cases actually increase muzzle velocity due to increased dwell time for gas expansion. They suppress muzzle flash and report by containing said gasses. Sonic booms still happen, and supressors work more effectively with specific sub sonic ammunition, which is usually achieved with a heavier projectile weight lowering the velocity.

I’m not trying to dunk on you here, just trying to educate.

Obtaining a supressor isn’t too difficult, but you do have to be thoroughly screened by the ATF after submitting photos, fingerprints, and a form, and a $200 tax, which leads me to believe this suppressor was homemade and lacked a Nielsen device, see my thread above.

So, many older pistol designs used a barrel in a fixed position in relation to the pistols frame. Due to this configuration, the added weight of a suppressor hanging from the barrel does not impede the mechanical operation of the slide cycling.

Modern pistol designs utilize variations of John Brownings tilting barrel design. Because the barrel tilts during the cycling of the pistol, the weight of the suppressor interrupts the movement of the barrel and slide preventing a full stroke of the slide to eject the spent case and feed another round from the magazine. Not good.

In response, something called a Nielsen device was developed, basically a cylinder with a spring in it that encourages the pistol slide to fully cycle. These are sometimes referred to as a “piston” or “booster”.

Suppressors are heavily regulated by the ATF, and id have to guess that when seeking one on the grey or black market, or manufacturing your own, a Nielsen device is not easy to replicate with crude means, nor easy to find on the street.

TL:DR dude was missing a part that makes a pistol work more gooder with a suppressor.

Source: I gun.