The presence of indicates this is likely a video file, possibly a recording made through a digital scope or a high-definition movie file:

Converting FFV1/MKV to v210/MOV * Master Files: Uncompressed 10-Bit 4:2:2 MOV. * Mezzanine File: ProRes 422 HQ MOV. * Access File: www.bavc.org MKV Files Explained - Adobe

: Often refers to a scope specifically designed for the AR-15 platform . These are frequently Low-Powered Variable Optics (LPVO) or Medium-Powered Variable Optics (MPVO) .

: This is a specific uncompressed 10-bit 4:2:2 video format often used for high-quality master files. A file named "AR Scope 210.mkv" might be a recording using this high-fidelity format.

: In cinematography, "Scope" refers to the 2.35:1 or 2.39:1 widescreen aspect ratio used for major films. 3. Augmented Reality (AR) Optics Converting FFV1/MKV to v210/MOV - BAVC Media

: This usually denotes the magnification range . A 2-10x scope means the image can be magnified from 2 times to 10 times the size seen by the naked eye.