I think it should work fine just the way it is. The shorter barrel on the carbine is almost perfect. I have the same gun and love it. I want the arrows also but cant use them to hunt where I live so I will wait until I move south. There are videos of the old carbine without the carbon fiber bottle shooting arrows so I have to assume this one will work also. Let me know what happens please.
Quick question….. What slugs are you shooting? Weight? HP? FPS? Accuracy?
I have only been shooting NSA 240 grain HP slugs so far and they are very accurate at about 850 fps. I haven’t had time to tune the rifle yet. I also bought some NSA 281 grain HP BT knurled slugs to try.