VLTOR A5 SPRING AND 5.3OZ BUFFER KITThe Vltor A5 Spring and Buffer Kit is a comprehensive upgrade package designed to optimize the performance of your AR 15. This kit includes a rifle length spring and an A5H2 buffer, working in conjunction with the A5 receiver extension to enhance reliability and reduce felt recoil. The rifle length spring provides a smoother recoil impulse compared to carbine springs, while the A5H2 buffer, weighing 5. 3 oz, offers an ideal balance for most AR 15