Dytac M203 Shorty Stand-Alone Frame with M4 Stock Adapter
 
Fully CNC Machined from 6061 Aluminium Billet
Mil-Spec Hard Coat Anodized
AEG buffer tube is needed if user wants to install buttstock (AEG buffer tube and buttstock are sold separately)
fit most 40mm Airsoft rail mounted grenade launcher in the market.
Compatible with Picatinny Rail Mounted Airsoft M203 Launcher Only (Not Included)
AEG Spec Airsoft Buffer Tube Required for Stock Installation (Not Included)
GBB Spec Pistol Grip Compatible (Not Included)
Option Part : 
FCW LMT Style M203 Front Sight with 1913 Base
FCW 20MM Adaptable Front Sight
Dytac : OMG-GL01