Out of stock
PWS Enhanced Buffer Tube, 308 Model - 4BT308B1
Out of stock

PWS Enhanced Buffer Tube, 308 Model - 4BT308B1

SKU 60002
Brand Primary Weapons Systems
Model Number 4BT308B1
UPC 60002
Customers must read Compliance Information before purchasing.

Product Details



Construction  6061 Al
Length  8.25”
Diameter  1.15”
Width  1.8”
Weight  5.8 oz


Enhanced Buffer Tube

Machined from one piece of 6061 aircraft-grade aluminum, PWS engineers were able to pack more features into the PWS buffer tube.

Goodbye Castle Nut

Eliminating the castle nut, the PWS EBT’s unique indexing screw & plate system ensures secure fit and precise alignment.

Carrier Tilt

Features a lip that extends into the receiver to support the back of the carrier to compensate for carrier tilt.

QD Attachments

Unlike aftermarket items, PWS EBT QD attachments are machined directly into the aluminum for durability and weight savings.


MK1 buffer tubes are fluted, creating channels for debris, and feature four drain holes on the bottom to allow for faster water drainage.


Q & A

Retail Stock


All NFA Rules Apply.
These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.