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Posted: 12/25/2025 12:45:26 PM EDT
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Sorry! I know I'm asking a lot and it's probably been done many times before. Plus, I usually do and should do my own time consuming research. However, I'm going to politely ask anyway. Money is absolutely of no importance, I want the best! Please give me a complete list of your recommended best parts to build the best SBR in 300 BO that will be exclusively for suppressed sub-sonic ammo. Please also include your best choice of suppressor. If a manufacturer already has, in your opinion, built or nearly built this gun (perhaps with minor modifications, please list), I'm certainly open to taking the easy route and just spending more money on a completed existing rifle with a few modifications. Thanks in advance for tolerating such a selfish and lazy question. |
| Getting a .300blk to run subs with a high backpressure suppressor is pretty easy. Typically, issues only come up if you’re trying to run subs and supers without the latter being super overgassed. So pretty much any .300blk and a high backpressure can should work fine, there’s probably a hundred options out there. |
Joined:
Sep 2022
Posts:
175
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TX, USA
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Step 1) Don't use a flowthrough can. Subs need higher backpressure cans to guarantee cycling. My Huxwrx 762 can prevents me from running subs below 208g if I want them to cycle, so I just run some nasty supers. Step 2) For building not buying, you don't need an "elite" manufacturer since this gun is realistically a 50 yard and closer gun, so just go with a BCM 7" or 9" upper. Step 3) Get one of the gas mitigating charging handles, and maybe one of the BCGs that's supposed to vent gas better, because you're going to be eating gas. |
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