autoloader

[aw-toh-loh-der]

noun

a firearm with an automatic loading mechanism.

Origin of autoloader

auto-³ + loader

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for autoloader

Historical Examples of autoloader

They had two rifles, one an autoloader, and they had in all likelihood three negatron pistols.
The Keeper
Henry Beam Piper