There's a world of options when it comes to AR15s, and for those that want to reach out to further targets or hunt the Endeavor Mk4 is an awesome choice. Built on our Mk4, AR15 platform, the Endeavor can make use of just about any AR15 compatible component and features a Nitride-finished 416 stainless steel barrel for enhanced ballistic performance;Magpul MOE rifle stock; ZEROED muzzle brake; EML 15 handguard maximizes customization potential. M-LOK attachment slots at the 12, 3, 6 and 9 o'clock positions give you plenty of real estate to mount accessories, while the Picatinny rail sections allow for easy and solid mounting points for sights and accessories. Includes 30rd Magpul PMAG.