Worst saftey - Sons of Liberty Gun Works Blaster Starter Kit

The parts kit is fine except for the saftey selector and mag release. The saftey selector is so hard and has five desting clicks through the range of motion. I've tried every trick in the book to no avail. The mag release is sticky and Magpul mags have to be manually stripped from the mag well because they won't drop free, but Lancer mags do drop free.