Tapco's AR Receiver Extension Tube kit includes a M4 buffer tube, castle nut, Tapco end plate sling adaptor, buffer, and a recoil spring.
This model is for Mil-Spec AR rifles.
Determined at checkout.
We ship our products nationwide and some products will NOT be legal in every state.
Every order is reviewed to be compliant with all federal, state and local laws.
Orders can be subject to cancellation and service fees if found to be against the law.
