The buffer tube is designed with a 1.148" outside diameter for proper fit of adjustable mil-spec carbine stocks.
It allows for the conversion of a rifle with a fixed A2 style stock to an adjustable M4 stock, or can be used in custom builds.
Constructed from 7075 aluminum with a hardcoat anodized finish, it features six notches to secure the stock locking pin.
The assembly includes a Mil-Spec buffer tube, lock plate, castle nut, carbine buffer, and buffer spring suitable for AR-15/M16/M4.
Constructed with a Mil-Spec diameter 6061 aluminum buffer tube and a 3 oz carbine buffer.
Features a 17-7 stainless steel carbine buffer spring and is designed to fit standard AR-15/M16 lower receivers.
Machined aluminum buffer tube assembly suitable for M4-style adjustable carbine buttstocks with six notches for length-of-pull customization.
Compatible with AR-15 and designed for use with mil-spec or commercial stocks; requires additional parts for complete installation.
Hardcoat anodized for durability with a dry film lube-coated interior for smooth buffer operation; available in mil-spec and commercial sizes.
The Strike Industries Advanced Receiver Extension Buffer Tube enhances AR15/AR10 functionality and aesthetics, with scalloped surfaces for reduced friction and strategic weight retention.
It includes a supported buffer retaining tab for easier receiver extension indexing and is made from 7075-T6 aluminum, offering superior strength compared to standard 6061 tubes.
Designed specifically for the AR-15, this buffer tube allows for customization and distinction from standard models.
The kit is compatible with Mil-Spec stocks and includes all necessary components for mounting a stock assembly to a lower receiver.
Features a six-position buffer tube made from 7075 T6 aluminum with a Type III hardcoat anodized finish, and a heat-treated, high carbon steel castle nut with a phosphate finish for durability.
Comes with a standard 3 oz. carbine buffer and a high-tensile steel carbine action spring.
The Brownells AR-15 Rifle Length Buffer Tube is precision machined from 7075 aluminum for quality assurance.
It features a matte black hardcoat anodized finish for durability and compatibility with AR-15 and M16 lower receivers and rifle length buttstocks.
The buffer tube has a length of 9 5/8” and a diameter of 1.110”, ensuring it meets standard specifications for AR-15 builds.
The Strike Industries Carbine length Pistol receiver extension is crafted from 7075-T6 aluminum for superior strength compared to standard 6061 tubes.
Designed with a supported, anti-rotation buffer retaining plunger, it also includes a machined sling swivel for efficient "push-pull" operation.
It is available in a Slick Version with a smooth profile for mounting various pistol braces and a Rail Version with an integrated picatinny rail for additional support or storage options.
The Brownells AR-15 Rifle Length Buffer Tube Kit is constructed from Mil-Spec 7075 aluminum with a matte black hardcoat anodized finish.
It includes a buffer and spring compatible with standard AR-15 and M16 lower receivers and rifle length buttstocks.
The kit features a 9 5/8” length buffer tube with a 1.110” diameter, providing Mil-Spec hardware for AR builds.
The Aero Precision AR-15 Enhanced Carbine Buffer Kit includes an Enhanced Carbine Buffer Tube with features like Carrier Support Extensions and Position Guide Drain Holes for improved reliability and operation.
It comes with a choice of Heavy Buffer (H/H2/H3) to help manage the recoil and is ideal for over-gassed barrels or short-barreled configurations.
The kit is designed with mil-spec dimensions, ensuring compatibility with standard carbine stock options, and includes all necessary components for installation, such as the buffer spring, endplate, and lock nut.
The CMMG Mk4 Receiver Extension is specifically designed for the CMMG line of Mk4 rifles, ensuring compatibility and reliability.
This receiver extension is made with the same high level of attention-to-detail as the factory-built CMMG rifles, offering a faithful upgrade or replacement part.
It is an essential component for those looking to build or maintain a rifle that meets the tuned construction standards of CMMG's Mk4 series.
The Geissele Premium Buffer Tube is made from 7075-T6 Aluminum with a Type 3 Hardcoat Anodize finish.
It is mil-spec with 6 stock positions, compatible with AR-15 lower and most mil-spec AR-15 stocks.
Manufactured in the USA, the buffer tube package includes a mil-spec castle nut and end plate.
The MK2 Recoil Mitigation System - Mod 1 reduces felt recoil and improves carrier velocity for better accuracy and reliability.
Constructed with Mil-Spec components like 7075-T6 aluminum and includes items such as a buffer, action spring, receiver extension, lock nut, and QD end plate.
Note that the MK2's extended length may prevent some Mil-Spec stocks from fully collapsing.
The Brownells 2-Position Mil-Spec AR-15 Buffer Tube is designed for constructing retro-style AR-15 rifles, fitting classic models like the XM177E1 and GAU-5A/A.
It features a period-correct anodized grey finish and is made from 6160-T6 aluminum, ensuring authenticity and durability.
This buffer tube is compatible with mil-spec buttstocks and is aimed at AR builders seeking to recreate vintage AR-style rifles.
Aero Precision offers 6-position adjustable buffer tubes made from 7075 aluminum for both carbine and rifle AR-15 builds.
The Rifle buffer tube is mil-spec and designed for A2 or A4 style rifles with a fixed buttstock.
These buffer tubes are suitable for new builds or as replacements for worn out parts in AR-15 style firearms.