Originally Posted by
cosmo223
Own a Sandman S and just ordered a Sierra 5. Right now I shoot the Sandman S on pretty much everything. My AR15's, my AR10, and a bolt action rifle. When my Sierra finally clears ATF (probably in about a year) I suspect it's going to end up being swapped between the AR's.
Agree there's not a lot of data on Sierra 5 yet. I really like the Sandman, and I love the Keymo mount. I also put an e-brake on mine, which keeps recoil pretty flat and may help a little with blowback. The Sandman is a little on the heavy side, but on a 10.5" or 11.5" gun I find it balances pretty nicely. The Sierra will be a couple of ounces lighter and a couple of inches shorter. I think it may suppress slightly better.
I've never had much of an issue with gas to the face shooting the Sandman S, even on my 10.5" and 11.5" AR's - and I shoot lefty. So you righties should have no problem at all. But I'm almost always shooting outdoors, generally with a little wind, and I tend not to do mag dumps, all of which probably helps. I do run either an H2 or H3 buffer when shooting suppressed. This is on DD and LMT 10.5" uppers and an 11.5" DD upper. All have been completely reliable and that's shooting in less than ideal conditions. Today I put about 80 suppressed rounds through my LMT upper. It was 2 degrees out. Shooting PMC X-tac had zero problems. No misfeeds, no failures to lock back on last round.
BTW - not sure if it's still on sale, but picked up my Sierra 5 from Bauer Precision for $716 shipped. And that's with Keymo mount and I believe a Keymo muzzle brake included. It was on sale, and then they had a coupon code for an additional 10% off. Best price I've seen.