[21twelve]

“the Devil’s paintbrush”.

At 666 rounds per minute, I guess so.

[MasterGunner01]

For those interested in all things about the Maxim gun, THE authoritative book is “The Devil's Paintbrush” by Dolf L. Goldsmith from Blake Steven's Collector Grade Publications. The book is available on Amazon.com. Collector Grade Pubs has some great books on many great guns: FN FAL, M14, .30 Carbine, Browning HP, BAR, etc. All are profusely illustrated and a must for your particular firearm of interest.