Raptor is simply a scion of 1950's cheap monster pictures. It's fun. The cast does a fair job. There are two real beauties in it. Who wouldn't want to ogle Melissa Brasselle and Lorissa McComas? The special effects are laughable, but isn't that all part of the heritage that we enjoy?
I think people expect too much from D movies these days. [Shades of "Horror of Party Beach"!] A cheap, low-budget picture is still what it was. If you enjoy the ambience of penurious production values, a Swiss cheese plot, stunning beauties, and the amateruish action scenes; then you have succeeded in comprehending the "Zen" of Raptor. I always watch it when it comes on cable. One of my favorite parts is when Lorissa McComas comes out of her coma [more shades- of "Them"] and starts ranting about the "big lizard". And the competing special ops squads are a riot. Where did they dredge up those uniforms? Remember when they just went to army surplus?
It's just a fun, cheap movie; and anyone who loves monster pictures should enjoy it at some level. Give it a try!