They
They may not *TECHNICALLY* be FIREarms, but it's ENTIRELY within the realm of reality for an airgun to be AT LEAST as potent, and in some cases, moreso, than comparable gunpowder-powered boom-sticks, and with one helluva lot less noise.
Betcha didn't know:
The Lewis and Clark expedition that headed out to explore the Louisiana Purchase territory in 1803 carried a .36 caliber air-rifle capable of punching through a 1 inch thick pine board at 100 yards, and is said to have been able to repeat the performance at least 20 times (seems to vary depending on who's reporting it - absolutely nobody claims less than 20, while some say it could do as many as 40 shots before needing a reload) in under 2 minutes before needing to be pumped up again.
Still think an air rifle isn't a real gun? Neither do I!
Before I was given my first actual for-real firearm (a single-shot .22Short/Long/LR) for my 10th birthday, I packed several flavors of BB gun, spring-powered and "pump-up" air rifles, and CO2 pellet guns around the farm and surrounding woods for years - Took a deer with a .177 pump-up pellet gun once, in fact (and got my ass severely warmed, and a thorough reaming about never doing that again - rabbits and squirrels, fine - Deer, NO! Not without a REAL rifle!)
You think this boy is gonna look down on an air rifle owner? If so, you better sit yerself down and have yerself another think, sunny Jim!