With a suppressor on the way, I'm very interested in adding a .300 BLK upper to shoot subsonic rounds with that suppressor. I've been doing some reading/research and I'm seeing that approximately 10" barrel length is the optimum for .300 BLK, though it can work fine down to about 8". But my real question is on the barrel profile. Some are saying and HBAR/Heavy barrel profile is the only way to go if shooting suppressed - primarily because the barrel will heat up more with a suppressor and the heavy profile will help to dissipate that heat. Others are saying the lighter weight A2 profile barrels are just fine. I'm finding a variety of options out there and I'm just curious if any of you have some more practical advice/thoughts on this? Is barrel over-heating with a suppressor more of an issue with a lighter profile barrel?
This would ultimately be planned to mate to a future SBR lower. For now, it would reside on a pistol lower.
This would ultimately be planned to mate to a future SBR lower. For now, it would reside on a pistol lower.
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