LUTH-AR offers replacement components for the AR-15 that are made to
strict military specifications. These high quality components will
provide excellent fit and reliable function in your AR series rifle and
are perfect for upgrading existing components or replacing worn or
Upgrade your rifle with the A2 fixed buffer tube. Allows the use of a
wide variety of LUTH-AR buttstocks including the Skullaton and MBA
series. A2 Rifle kit is for mounting any fixed rifle buttstock based on
the military M16A2 stock. Kit includes receiver extension tube, recoil
buffer, buffer spring .
A2 Buttstock Extension Tube
Standard 223 Buttstock Buffer Spring
Standard Buffer Body Assembly
Installing A2 buffer system on a carbine may affect function.