Originally Posted by
buckengr
OK, that explains the origin of what you have. Yep, you are good to go on pistols that have moving barrels using the 9mm (i.e. 1/2x28, probably) piston you have.
On the Beretta, the choice of mount is up to you. Some suppressors are light enough that the gun can still run without a booster (using either a spacer or a fixed mount). Others might need the booster to run reliably. Even though the barrel doesn't tilt, it does move back and forward in line, so some suppressor companies recommend the booster. Either way is fine on the 92 series.
For your 1911, the barrel does have to tilt to unlock, so you probably will need a booster. Note, you actually just need a piston that matches the threads of your 1911 barrel. The thread-pitch specific pistons are sold separately and you can reuse your spring and booster mount.
The 5/8x24" fixed barrel mount it came with is good for fixed barrel guns like the Kriss Vector in .45 or a .300 blackout.
Note: if you decide you want to run this on a truly fixed-barrel gun, like a 9mm carbine for example, you should use either a fixed barrel mount in 1/2x28" or a spacer to install in your booster housing so you can use your existing 1/2x28" piston. Guns with fixed barrels should never be used with suppressors with boosters with the spring installed, since it is more likely for the can to become misaligned during firing which could lead to a baffle strike.