Collocations for rifle - noun

automatic, bolt-action, semi-automatic, single-shot
high-powered
.22, etc.
army, assault, hunting, sniper, sporting
air
Kalashnikov, M-16, etc.

grab
load, reload
raise
aim
fire
shoot sb/sth with
be armed with, carry

barrel, butt
bullet, cartridge
fire, shot
club, range
company, platoon (both AmE)