TWO TWO THREE Innovations is making it easier for the do-it-yourself AR-platform builder with products like the Gas Block Genie, the only precision gas block alignment tool that affords perfect gas block port alignment. Their newest development, the Roll Pin Wizard, is like having an extra set of hands. It gives the lower receiver builder complete control while installing and removing the bolt catch roll pin, eliminating scratches, scrapes and scuffs. The Roll Pin Wizard also doubles as a pivot pin spring and detent installer/remover! (less)