The Geissele Super Duty Upper (Stripped) features the quality and workmanship you've come to expect from the Geissele name. At the heart of this stripped upper is a Super Duty upper receiver that mates to an MK16 Super Modular rail via a center aligning tab, removing any chance of rail rotation. This family of rails is renowned by operators for their performance and comfort. It features an in-house, Manganese Phosphate coated, CHF, Chrome Lined barrel. Geissele barrels are precision machined and cold hammer forged, utilizing the highest quality materials available. This stripped upper is ready to be furnished with your favorite components to ensure an accurate, reliable and soft recoiled shooting experience. Note: Geissele DDC, or Desert Dirt Color, refers to the variety of shades of desert terrain. Differing shades of DDC are desired on a military small arm to breakup the outline of the weapon. These colors can vary from color seen in the picture of the product, and can also vary f...