FEATURES-ACOG® Riflescope-Red Horseshoe/Dot Reticle & M4 BDC w/ TA51 Mount-Magnification: 4x-Objective Size: 32mm-Bullet Drop Compensator-Length: 5.8"-Weight: 9.9oz-Illumination Source: Fiber Optics & Tritium-Eye Relief: 1.5"-Housing Material: Forged Aluminum-Mount: TA51