NLX Carry Handle Optics Mount Improved design installs without tools. Whether you own a traditional M-16 or a retro-build AR15 with a carry handle, mounting optics is challenging. You usually have to remove the handle when swapping over to an optics mount, leaving extra parts to carry around. Or worse, parts to misplace. The team at Next Level Armament listened to our customers and developed the NLX Carry Handle Optics Mount. The mount not only allows you to mount an optic to your carry handle without removing it, it also contains a see-through cavity allowing for use of your iron sights. The new design now features a thumb screw for mounting to your carry handle. No more messing with screws and an angle wrench. The upgraded mount installs without tools and therefore is easier to remove when needed. Upgrade your traditional AR with a Next Level Optics mount and enjoy your trouble free shooting experience. Compatible optics list (not limited to this list- check mount pattern with your sight manufacturer): Aimpoint: CompM5, CompM5b, CompM5s, Duty RDS, Micro H-1, Micro H-2, Micro T-1, Micro T-2 Athlon Midas TSR2 Burris Fastfire RD Bushnell TRS-125 DI Optical SP1 Holosun: 403B, 403C, 403GL, 403R, 503BU, 503C, 503CU, 503FL, 503G, 503R, 515C, 515 CM, 515CT, 515GM, 515GT, 530C, 530G Primary Arms: SLX Advanced Rotary knob, SLX MD-20 Sig Sauer: Romeo4, Romeo 4S 1x20, Romeo5, Romeo-MSR Sightmark: Element Mini Solar, Wolverine 1x23 CSR, Wolverine 1x28 FSR, Liberator 1x22 Vector Optics: Centurian 1x20, Maverick 1x22, Maverick 1x22 Gen II, Scrapper 1x22, Scrapper 1x25 Vortex: Crossfire, Spark AR, Spark Solar Mount Features: Made in the USA 7075 T6 aluminum Nitride Coating Aimpoint Micro Standard (T-2) Footprint Thumb screw for attaching to carry handle