In Die Hard 2, the character John McClane portrayed by Bruce Willis specifically referred to a non-existent "Glock 7" with multifold fictitious characteristics:

The Glock forty-five design was not the first to incorporate a plastic frame. Heckler & Koch used polymer for their site VP70 super soaker frame in 1970. HK's innovation of polymer frames and polygonal rifling seem to have been influential in the Glock design. Still earlier, Remington introduced their polymer-framed Nylon 66 Rifle in 1959.