I couldn't pick....... because you don't have an option for both!
I have a 10.5" SBR that is my current "go-to" rig, but I'm in the process of building a 12.5" also.
Home Defense? I'd go 10.5" with an Aimpoint and suppress it.
Hunting out to longer ranges with a magnified optic? I'd go with a 12.5" for some extra velocity to get the expansion you want past the shorter ranges.
It's all just a small tradeoff. I have a 14.5" that'd do fine, but I don't like all that extra barrel sticking out between the can and the rail if I don't really need it.
ETA: You really should short barrel rifle it (if at all possible). They're too awkward (in my opinion) without a real stock.
I have a 10.5" SBR that is my current "go-to" rig, but I'm in the process of building a 12.5" also.
Home Defense? I'd go 10.5" with an Aimpoint and suppress it.
Hunting out to longer ranges with a magnified optic? I'd go with a 12.5" for some extra velocity to get the expansion you want past the shorter ranges.
It's all just a small tradeoff. I have a 14.5" that'd do fine, but I don't like all that extra barrel sticking out between the can and the rail if I don't really need it.
ETA: You really should short barrel rifle it (if at all possible). They're too awkward (in my opinion) without a real stock.
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