If you are looking to replace parts or upgrade your AR-15 rifle with a new standard buffer than you have found the correct item. This standard buffer measures 5.910" long and weighs in at 5.1776 ounces. This particular model of buffer is designed only to work in conjunction with the standard A2 buffer tube.
Specifications and Features:
AR-15 Standard A2 Buffer
Overall Length 5.910" Long
Overall Weight 5.1776 ounces
AR-15 rifles with standard A2 buffer tube and standard spring