The Alpha Parts steel receiver dummy pin set for the System PTW M4 s a set of dummy pins that you can place on the receiver of your Systema PTW to make it look like the pin set of the real steel gun.
The Alpha Parts steel receiver dummy pin set for the System PTW M4 s a set of dummy pins that you can place on the receiver of your Systema PTW to make it look like the pin set of the real steel gun.