Mil-Spec AR-15 A2 Extension Receiver

This item is an A1/A2 Rifle Receiver Extension or Rifle Length Buffer tube. Allowing for fitment of A2 style fixed stocks, the Rifle Receiver Extension is not compatible with most collapsible stocks.

Pair the Extension Receiver with a VLTOR A5 Action Spring, Sprinco Green Spring, or a Rifle Action Spring; and A2/VLTOR A5 buffers for proper fit and function.