223 AR, which causes them to build a 300blk next. In one of my AR's, I don't have an adjustable gas system on it, so I run an 8 oz buffer to slow stuff down, If I could have made it 10oz, I would have.Ī lot of people are usually not happy with the level of suppression on a. You really should be running a heavier buffer also. If you have an adjustable gas system, turn it down until the gun stops cycling, then open it up just enough to make it cycle reliably. If you are going to start running a suppressor on your AR and are running it with supersonic loads, please keep in mind that you are increasing the backpressure on the system a lot and if you don't make a couple of changes to your rifle, you can shorten its life significantly. The bullet breaking the sound barrier is louder than 140db which is why most like to shoot subsonic bullets to make the platform quieter. 223 with a good suppressor are going to run in the neighborhood of 137-140 db, which is hearing safe, but still uncomfortable to my ears. As a novelty, yes, you can load up a few and keep them around for fun, or showing off at how quiet you can make it, but your rifle will likely be turned into a single shot and you will have to manually cycle the action to load the next round every time. Its likely that it will be almost impossible to get your AR to cycle reliably at all with subsonic loads unless you build the gun for that purpose. I have to ask why you want a subsonic 223 round though as you are turning your center fire rifle into a. First, welcome to the world of suppressors.
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