Rise Armament Rise Upper Parts Kit AR-15. It includes the port door forward assist springs and more. Simple straightforward and inexpensive these AR15 Upper Parts are just what you need to replace old parts or finish off your build. Specifications for RISE Armament AR-15 Upper Parts Kit: Manufacturer: RISE Armament Gun Model: AR-15 Features of RISE Armament RISE Upper Parts Kit Ar-15 7-Piece Standard Upper Parts Kit Compatible with AR-15s All parts MIL-SPEC Package Contents: Rise Armament Rise Upper Parts Kit AR-15 The Rise Armament Rise Upper Parts Kit Ar-15 is a quality addition to the RISE Armament lineup. For more great deals on AR15 Upper Parts by RISE Armament please browse our Rise Armament Gun Parts page. What firearm models does the manufacturer say RISE Armament AR-15 Upper Parts Kit is compatible with? The manufacturer says that RISE Armament AR-15 Upper Parts Kit is compatible with AR-15Rise Armament Rise Upper Parts Kit Ar-15