The SPAS 12's of Jurassic Park

In excitement for the release of Jurassic World I've been watching a lot of the original movies lately, which has got me on a bit of a movie prop kick. In visiting great websites all over the Internet regarding the "screen accuracy" of everything from Jeeps, to costumes, and other props, but I noticed there didn't seem to be anything regarding the variations of the SPAS 12's used in the film. So I took a Blu Ray copy and stepped it through frame by frame whenever a SPAS 12 was on screen to see just exactly what was going on with the SPAS 12's used in the film. Hopefully you'll enjoy the article, and if you have anything new to contribute to it please send it along and I'll happily update the article with credit!