The Ascend Phoenix Billet Upper Next Level Armament's Ascend Phoenix Billet Upper is the original Ascend Armory design, with Next Level Armament's precision machining. Machined from billet aluminum and hard coat anodized for durability, our billet upper is all Ascend aesthetics with Next Level quality. This upper will will fit on older model Ascend Phoenix lowers. Build a complete upper to match your original Ascend rifle, or to match your new Next Level Ascend Phoenix rifle. Either way, you won't find better quality or get more looks at the range with your Ascend receivers. **Handguard Compatibility: The Phoenix uppers will NOT work with a handguard that overlaps the receiver due to the contour of the upper. Handguards must be flush with the front face of the receiver to work without custom fitting.**