I got a few of these Ryusoku buckings for testing.
Quality wise this bucking has it. Not too thin, not too thick. Solid material that doesn't seem to tear easily. Nothing worse than buying a new bucking and it tears on you during installation.
So I haven't done any real range/accuracy testing with this bucking. Honestly can't give you increased range distances, or how it's improved my accuracy. What details I do have is I installed one in a 247mm Mk18 MOD1 G&P build. It's shooting just under 400fps and I shoot at people at 150 plus feet range in the woods and I notice they drop for cover, or I hit them. A compact set up with some good range. I engaged one guy with a dmr at over 200 ft during one game and my burst made him take cover, but he managed to get one accurate shot in on me. Still a compact set up sending bb's out to a good range.
The last game I used it, I noticed bb's were lifting at 120 feet. I'd shoot at someone and the bb's would sail just over their head. After the game I realized I loaded .25's and the hop up was dialed for .28's. You can adjust for any bb weight, just the settings are sensitive to bb weights.
Quality product (bucking & nub)
Seems to be effective the 3-4 times I have used it during a game.
To me it seems to add range, but like I said, I have not done any range testing.
Very easy to install.
I am buying more when back in stock.
I am a fan of this bucking, but some will dismiss flat hops as inferior to newer hop designs.
Not sure if it's a 300ft hop up solution.
not in stock! ASGI order MORE!