These are 3D printed M4 stands. The first two pics are of a completed print and the last two are digital 3D renderings of the type of custom work that can be done. Designed to lock into the mag well the same as a mag would for stability. $15 for the basic version. Custom version Starting at $20 DM for details. Buyer covers HopUp fees unless otherwise negotiated. Available in olive green (pictured), black, white , red, orange, neon green, purple, and blue