MidwayUSA is proud to offer this AR-STONER Optics Ready Upper Receiver Assembly in 450 Bushmaster at an exceptional price! This AR-STONER carbine length upper features a 450 Bushmaster bolt carrier group, parkerized finish, low profile gas block, and a heavy profile barrel. The A3 upper will attach to virtually any standard AR-15 lower receiver and comes complete with charging handle, forward assist, ejection port cover, A2 flash hider, bolt and bolt carrier assembly. Supplied without a rear sight, this upper is a great platform for a red dot sight or iron sights (both sold separately).

Due to high demand and our desire to serve as many Customers as possible, we are currently limiting the quantity that each individual Customer may order.

One Time Offers represent special one-time purchases where MidwayUSA has negotiated a reduced price and then passed the savings on to the Customer. One Time Offers have limited quantities available and usually once they are sold out, they are not offered again.

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