The BJ Tac SB style stock is designed to offer the pistol brace look for you to build your "pistol" style short barreled AR featured by many shooters in the United States due to fire arm regulations. 

The stock works much like standard stocks and works with standard buffer tubes found on both GBB as well as AEG M4s. 

Compatibility: 

• M4 AEG Series Airsoft Guns 
• M4 GBBR Series Airsoft Guns 

Includes: 

• x1 BJ TAC SB Style Stock for M4 AEG / GBBR Airsoft - Dark Earth