B5 Systems Modular Picatinny Stock - Flat Dark Earth - The B5 Systems Modular Picatinny Stock in Flat Dark Earth is a durable, low-profile fixed stock designed to mount directly to 1913 rear Picatinny rails. Ideal for compact rifle builds, PDWs, or bufferless platforms, this stock offers a stable shoulder interface and streamlined profile for maximum performance in close-quarters or suppressed setups. Features Modular Picatinny Stock; Rear 1913 Picatinny Rail; High Strength Polymer; LightweightQD Sling sockets; Built for PDW / AR Pistol / Compact Rifles / Bufferless System;