Thanks for reaching out Jason! It should cycle an AR like your S&W, but I'd much rather recommend the Remignton 22 Golden Bullet 22 LR we currently have in stock. I estimate it will generate more of the chamber pressure your semi-auto needs to cycle correctly, and I greatly prefer a copper-plated bullet for my own semi-autos because it keeps the bore cleaner to preserve accuracy and facilitates smoother feeding to a slight degree.