fixed gun

fixed gun

[¦fikst ′gən]
(ordnance)
An aircraft machine gun mounted rigidly to the aircraft, and aimed by moving the aircraft.
References in periodicals archive ?
Based on a roll-on/roll-off pallet system that allows easy reconfiguration of the aircraft for other missions, this is a phased programme that led to firing tests with a fixed gun in Spring 2013, followed by prototype flight last April in Turin equipped with the L-3 Wescam MX-15Di optronic sensor installed under the nose of the aircraft.
The source claimed: "This boy fixed guns for everybody, not just the UVF.
I've reloaded stuff you've probably never heard of or would want to shoot, I've fixed guns you might never have heard of and performed the last rites on some you would wish to have owned.