a.k.a. The Lunchwaiste Lariat Cannon (colloquially known as "The Whippersnapper"). After witnessing the popularity of the Mark I Enfettering Musket with law enforcement officers, military recruiters and beleaguered nannies, the engineers at Lunchwaiste and Sons got straight to work on an enhanced model with a larger air pressure chamber, a more ergonomically situated retrieval crank and a comfortably padded leather grip. This new enhanced model has been proven to command enough stopping power to halt a charging prairie squid at 30 paces*.

*we suggest you avoid using the Lariat Cannon on Prairie Squid, Shoggoths or Jack-Razors, unless suitably prepared to deal with the consequences.
That looks like a marvelous device, Mr. Lunchwaiste. Certainly would be very useful along the banks of the Colorado River near Waterloo, Texas, where we have suffered from an infestation of Prarie Squid since the 1840s!
I remain AYS
Adm. J Wilhelm
PS. If you pardon me for asking, would the device be useful against Tree Octopi?