Pinning your own gas block isn’t necessarily hard… if you have the right equipment. If you don’t or you just want to save some time, it can be nice to purchase a barrel with a pre-pinned gas block but options are few and far between. Fortunately, Faxon Firearms is now offering a selection of their AR-15 barrels available with pinned gas blocks already installed.
I think people will dismiss how cool this really is.
Pinned gas blocks are highly recommended for hard use guns, even if this is just your training carbine.