If you have a socket wrench with a deep enough socket in the size, that is the preferred tool as it will bear on all the flats distributing the load.

22 is kind of good and tight using your knees without a vise.

The needle torque wrench is really ideal because you know you’re good then and aren’t over tightening anything on pistols which might not be super durable when used as a sort of fixture for the process.

I don’t think you should have to snap tighten the can to the adapter, but it is a good idea to check tighten early during your familiarization with the systems, as that is cheap insurance against errors, and any lack of tightness will essentially provide feedback on a need to add installation force during initial orientation with the product.

The 16TPI thread is very coarse and durable.

A group of us shot 2000 rounds today with a Checkmate HD .22lr suppressor using a EZ lok mount on a Beretta 92 .22lr handgun.  I tightened that kind of tight with my hand on the tube and mount, knowing it was going to be too hot to touch to re-tighten for the duration of the shooting.  Around 1000 rounds fired, the PVD on the rear mount started showing purples and blue hues in the black from heat (like sun on an oil puddle).  The metal takedown latch of the Beretta on the polymer dustcover of the frame was hot enough to burn skin.  We started water quenching it periodically after that.  The can stayed tight for the 2000 rounds.  It came off nicely, and that can at that point had 3000 rounds since cleaning and we were able to easily remove the core from the tube- clean tube ID, clean core OD, baffles came apart by hand, but the O-rings needed replacement from too much heat. I used a single ply blue paper shop towel to get a grip on the tube to remove the rear mount from the tube during disassembly (a consequence of using the tube to tighten the EZ lok to the pistol adapter). We fired the 4 bricks of ammo in about 1.5 hours total time. I don't think very many people are going to shoot like that as its not fun to load the magazines, and you need a couple people loading magazines 100% of the time to shoot that fast.

The RSA needs to be 3rd generation.  There are little adapters that adapt the big gen 5 hole to gen 3 RSA fitment.  

The gen 5 RSA is just humongous and can impact the piston retainers or pistons of systems, and it isn't very suppressor friendly.  

These parts are available through several sources.

https://tarantacticalinnovations.com/guide-rod-adapter-for-glock-pistol-generations-4-and-5/

https://www.midwayusa.com/product/1019871031?pid=739600

https://www.midwayusa.com/product/1004280527

https://www.midwayusa.com/product/1004271653?pid=355643

When Glock did the Gen 5 the other shitty thing that happened was the frame rail became very flexible due to the amount of extra material removed for the slide clearance.  The Gen 3 was better in that respect, but still not as rigid as some other handguns with different polymer materials.