Can I use the same suppressor with both the Walther P22 and my Spikes .22LR dedicated upper?  If yes, any recommendations?  If no, what do you recommend for each?

Thanks

Yes, but depends on how long the thread's are on the Spike's Tactical upper too. If they are .6" long, you may need a .2" long spacer.

A lot of the .22 suppressors thread's are .4" long. Normally, AR barrel threads are .6" long, you may touch the blast baffle when suppressor is screwed on. I know the SWR Spectre thread's are .6" long, so there is no problem with running that Suppressor on a .22 conv. AR barrel.

I'd also recommend getting a Stainless "take apart" can that you can clean yourself. Running a .22 AR, you'll put a lot of rounds thru it.

thanks

I was looking at the YHM Mite.  It's a "take apart" can also.  If I understand you I can use that can on both, but will need a .2" long spacer for the spikes upper???

Quoted: thanks I was looking at the YHM Mite.  It's a "take apart" can also.  If I understand you I can use that can on both, but will need a .2" long spacer for the spikes upper???

Mite is fine for both. You have to measure the threads on the Spike's upper. I don't know how long they make them. Under 1/2" (.4") your good to go, over 1/2" (.6") you might need a spacer.
Ask how long the threads on the Mite are too, I don't have one of those.

thanks for the info.  very helpful.

I use a wraith on both the P22 and a Spikes upper.  I have a QD on each and no spacer is needed.  The QD (at lesat for the wraith) is good to go @ .625, and anything shorter is fine, so long as the shoulder of the barrel is square to the bore to give the QD a square stopping point.

~Dan