Selling my broad river tactical car15sd upper receiver. Includes cmmg radial delayed bolt carrier group and dead air p series 1.203x28 adapter. The barrel is ported like an mp5sd is so it bleeds off gasses same as an SD. Regular ar15 lower fits on it. Comes with a mean arms exomag and a few endomag converted ar15 pmags. This is around $1200 new and the wait time is 4 months. Pickup in anchorage. Text preferred. Optic and scalar works mount included for extra $200.