The WOA SPR and SDM Uppers were inspired by the Army's Squad Designated Marksman (SDM) Rifle Development Program which was tasked with improving the accuracy of the standard issue rifle against targets out to 600 meters. These tactical uppers are great for everything from 3-Gun competition to target shooting. The SDM Uppers come with a Daniel Defense MK4 Handguard, low profile gas block and a standard flash hider installed. Our SDM barrels are fluted under the handguard for better heat dissipation and weight reduction. The SPR uppers feature the White Oak TR Series M-LOK handguard, low profile gas block and a standard flash hider. All of our tactical barrels have M4 feeds ramps and are chambered in .223 Wylde which is suitable for a wide variety of .223 or 5.56 ammunition. The bolt carrier group and charging handle are included.
All uppers are also available in a Left-Handed configuration for an additional $163.