I would wager the bent pin is from its possess starting...a dull Software that Slice it to size or anything equivalent. **WARNING** In firearms that use a floating firing pin (such as the AR-fifteen and its variants), dropping the bolt on a chambered spherical may lead to some slam fireplace. https://jasperrcmue.blogscribble.com/37888844/once-fired-5-56-brass-fundamentals-explained