AR-15 Gas Tube Available in: Carbine Length, Mid-Length and Rifle Length - All Gas Tubes include a Roll Pin
Receiver Extension Lock Ring
Lower Parts Kit without Trigger Group, Trigger Guard or Grip.
SIONICS Complete Lower Parts Kit with Enhanced Mil-Spec Trigger.
The SIONICS Weapon Systems Upper Receiver Parts Kit.
H3 (Heavy) Buffer for your Carbine, AR15 and M4
H2 (Heavy) Buffer for your Carbine, AR15 and M4
Customizable Lower Receiver Build Kit
SIONICS Weapon Systems M4 Upper Receiver
Mil-Spec Firing Pin
SIONICS Ambidextuorus Safety Selector - Short
Firing Pin Retaining Pin