Shop Bushmaster .223 Remington firearms built around familiar semi-auto rifle platforms like the XM-15, XM-15 QRC, ACR, and Carbon 15. This tag includes optic-ready models, red dot configurations, modular black rifles, and lightweight builds in common 16-inch and 20-inch barrel options. These Bushmaster .223 Rem rifles fit buyers comparing AR-style ergonomics, .223 Rem chambering, and practical factory setups for range use, collection, or customization. Browse Gen 1 XM-15 variants, V1 Tactical models, and lightweight Carbon 15 options by barrel length, sight setup, finish, and capacity.