This is the Bravo Company MFG (BCM) Gunfighter Kinesthetic Angled Grip (KAG) / hand stop. It fits M-LOK hand guards and forends.

Features:

• High-quality, impact-resistant polymer
• Ribbed texture for positive control and engagement
• Ideal for C-clamp / C-grip method of handguard support
• Slight angle to prevent wrist strain