CAA AR-15 M16 M4 Tactical Butt Stock With Battery Storage With Commercial Tube

Increase your comfort, control, storage, and mounting options. Ambidextrous side compartment with snap tight latch provides waterproof storage for 4 CR123 batteries Side Picatinny rail allows addition of Adjustable Cheekpiece (ACP) or Mag Holder (MPS) Sold Separately.