Get it now or PM me the goddamn info and I'll get 'em.
SDN6 is one of the best .300BLK cans out there. It's a damn good can, period. It's mounts suck ass, so if you get it, here's a trick:
Order ten of their brake mounts --stay clear of the flash hider, it rings like a damn tuning for a minute after firing, and the brake/hider combo just isn't worth it. It's okay at both but not really good at either. The brakes are nice though. Now most won't fit, so don't torque 'em down. Remember you're gonna be returning most, so keep 'em in good shape. Find the ones that fit and lock up tight, send the rest back, get your refund. Now you'll have a mount you didn't have to fuck with to make work, and that retains the factory warranty. FWIW, AAC seems to be trying step up their game in CS. They can only go up, so there's that.
Don't ratchet the can on. Depress the latch taking it on and off. That'll prevent that latch from wearing out, because it takes a good bit of wear.
The .22 can is a thread on. They make good cans, I imagine that one's just fine.
I have 2 SDN6's and 2 556SD's. Once I figured out the ordering extra mounts trick, all the AAC problems just went away. It's a shame you have to do that, but it works and it works well.
It was only ever AAC's insistence to stick with a shitty mount design (and double down on that not once but twice). They did this despite their customer base and ran 'em off. Because the mounts were such shit, baffle strikes were common as were other problems, they got inundated with warranty work, and finally started blaming the user and asking more of him than necessary to fix the problem in hopes he'd just go away. Well, we did that, and we did it in droves and they went under. Remington runs it now. I'd still like to see 'em come out with a new design, but I imagine they've got a lot of old stock to work through and old AAC ran off all their potential customers.
Once upon a time, not too long ago, SDN6 was considered one of the best on the market.