If it weren’t for the supersonic crack of the projectile, the sound would be all low and dull and about as good as it gets.įront caps are compatible with all of Dead Air’s R-Series caps including their E-Brake. For a compact suppressor it performs extremely well and it has a solid, pleasing tone to it with no high-pitched pinging like many 5.56 suppressors have. Out on the hunt, in a deer blind, and behind the ranch house, the Sierra-5 sounded great. My buddy Peter chose to run the Radian most of the trip and he took a nice hog from about 140 yards. Last weekend both the machine gun and the Radian Model 1 accompanied a few friends and me out to Lonesome Boar Adventures in Mountain Home, Texas for some hunting. It’s clear that the taper section in front of the threads sealed up flawlessly and kept the threads perfectly clean.Īt the same time, over the course of three or four full heat cycles across as many range sessions and one hunting trip, the Sierra-5 never came loose on me. Once the suppressor stopped smoking and cooled down I was able to unscrew it - righty loosey! - from the flash hider without issue. Worth noting, the Xeno mount also didn’t seize up. 223 through a 14.5-inch upper on the Xeno Sierra-5 and it shrugged it off like a champ. And, yes, I fired a few mags of full-auto. With Stellite baffles fully welded in a 17-4 PH stainless steel body, the Dead Air Sierra-5 is full-auto rated with no barrel length restrictions. The suppressor’s blast baffle is nice and beefy with interesting ribs down the sides that I don’t think I’ve seen before. There’s space inside the base of the Sierra-5 for lots of different muzzle brakes, compensators, and flash hiders. my Radian seen in this review has its KeyMo flash hider welded to its 14.5-inch barrel to meet the 16-inch legal length). Presumably most people doing this would also be pinning and welding said mount to their firearm in order to use the Sierra-5 as legal barrel length (e.g. If you’ve really standardized, there’s a pre-drilled hole at the base of the Sierra-5 that can be used to pin and weld a mount to the silencer. Though I’m a perfectly decent fan of both their KeyMo and Xeno systems, I’d rather not be forced to pay for one of these systems if I’ve already standardized my gun collection on something else. There are many dozens of mounting systems available for this thread pitch, from QD to direct thread to pistol boosters and so much more.įrankly, I wouldn’t complain if Dead Air also sold the Sierra-5 completely sans mount. A great feature of the Sierra-5 is that it’s threaded at its base with the now near-universal “HUB” mount aka 1.375×24 aka 1-3/8×24 thread size. The Sierra-5 is consistent.Īt least that’s the case with Dead Air’s mounting systems (Xeno seen above). Any shift to your point of impact with and without a suppressor can vary wildly depending on the host firearm, but as long as any shift is perfectly consistent you won’t encounter issues. The Sierra-5 wasn’t an outlier.īoth of Dead Air’s mounting systems also provide a fully repeatable return to zero should you remove and re-install the suppressor. Despite popular myth it’s rare that a silencer degrades accuracy and, actually, more common that they improve accuracy. While ear pro is necessary at the indoor range whether suppressed or not, I was still able to recognize the nice tone and solid suppression of the Sierra-5 along with the complete and total lack of concussion normally associated with firing 5.56 indoors.Īs you can see in the photo above, the nice little Dead Air silencer maintained the excellent accuracy of this rifle. I visited The Range at Austin to do some initial testing with the new Atibal HYBRID12 1-12x scope and the Black Collar Arms forged carbon fiber cantilever scope mount, and put a bunch of rounds through the Sierra-5 at the same time.
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