Starfinder: Colonial Marines, Engineers and Predator Weapons, armor and more
This huge article has a lot of new ideas. The major changes are when it comes to the Colonial Marine weapons. They have a 'inherent accuracy' bonus, which essentially translates to the OSR system of weapons with a + to hit bonus. This is entirely optional can can easily be ignored. Also these weapon systems have possible accessories, which can be added to the weapon itself. Each accessory has a base cost to it, and although I didn't add it to the list, I should have an actual 'level' listed, which I will probably add once I compile the book into a single PDF. For now, you'll just have to use it as is.
I have also included a couple of new armor upgrades and a feat.
Have fun!
Chris Van Deelen is the creator and contributor to over half of the Wisdom from the Wastelands series, contributor to the Swords of Kos: Hekaton anthology. He also wrote Creatures of the Tropical Wastelands, and 100 Oddities found in a Car. As prolific as he is, Chris Van Deelen continues to write and produce material which will be in publication soon. Not only is he a prolific content creator, he also has a wide selection of fiction and stories! If you like his work, please follow his personal author page on Facebook and on Twitter to keep up with his latest news and game content.