Fits Gen 3-4 Glock 26 compatible frames. This Remsport bullnose upper drops straight onto a compatible frame - no fitting required. Finish is black nitride on the slide for corrosion resistance and a low-glare surface. Features: Remsport iron sight-cut bullnose slide, black nitride finished 9mm threaded barrel, 1/2x28 - drop-in fit, chambered in 9mm Luger Thread protector included and installed 1/2x28 threads accept a compensator, muzzle device or thread protector 3CR Tactical slide completion kit installed - firing pin, extractor, recoil rod, all internals Standard-height polymer sights installed and aligned Fully assembled and function-tested in our Florida shop Break in with 200 rounds of 124-grain or heavier 9mm before running lighter loads. Confirm frame compatibility and cycle the action by hand to check full lockup before live fire. STATE RESTRICTION NOTICE This product may be regulated as an "assault weapon" feature or component (e.g., threaded barrel, muzzle device/compensator, or assembled upper) and may be restricted or prohibited in CA, CT, DC, HI, IL, MA, MD, NJ, NY, RI, VA, WA, and select municipalities. It is the buyer's responsibility to verify local, state, and federal laws before purchase. Orders that cannot ship to a restricted address will be canceled and refunded. DISCLAIMER: GLOCK is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H. 3CR Tactical is not affiliated with, endorsed, sponsored, or approved by GLOCK, Inc. or GLOCK Ges.m.b.H.