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AR-15 Pistol Buffer Tube Kits

Whether you're in the market for an AR-15 Buffer Tube Kit, an AR Pistol Buffer Tube, buffer spring or rifle buffer tube, you should find what you need right here. This category also features sling attachment points, sling adapters and the Fortis military spec AR receiver end plate and Impact Weapons Components (IWC) end plates, both with QD (quick detach) capability.

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AR15 Carbine Buffer Spring AR15 Carbine Buffer Spring

Music wire steel carbine buffer spring manufactured to MIL-S-1357 specification for replacement with pistol buffer tube, or M4-type receiver extension tube for collapsible carbine buttstock.

Our Price: $6.99
Sale Price: $4.99
Savings: $2.00
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RBA - AR15 Carbine Receiver End Plate (aka Eggplate)

Carbine Receiver End Plate.

Our Price: $6.99
In Stock
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RBA - AR15 Receiver Extension Tube Castle Nut

Carbine Castle Nut. AR15/M16

Our Price: $6.95
In Stock
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RBA - AR15 Carbine Buffer - Standard Weight

Standard Buffer for your carbine, AR15, M4

Our Price: $12.99
In Stock
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DPMS - Receiver Extension Tube (Buffer Tube) -  A1/A2 Rifle Stock DPMS - Receiver Extension Tube (Buffer Tube) - A1/A2 Rifle Stock

A2 Rifle Style Receiver Extension. Correct buffer tube for installing Magpul PRS buttstock.

Our Price: $16.99
In Stock
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Impact Weapons Components (IWC) Q.D. Receiver End Plate Impact Weapons Components (IWC) - Q.D. Receiver End Plate

AR Receiver End Plate with ROTATION LIMITED QD Sling Swivel Socket from Impact Weapons Components

Our Price: $17.99
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Spike's Tactical ST-T2 heavy buffer

The Spike's Tactical ST-T2 Heavy Buffer is one of the softest shooting, smoothest and quietest buffers on the market not to mention it looks awesome. It doesn't have any weights to move around or fluids to leak out, it's 100% maintenance free!

Our Price: $34.99
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Spikes Tactical Buffer Tube Kit Mil-Spec 6-Position Spike's Tactical - 6-Postion Buffer Tube Assembly - Mil-Spec

The Spike's Tactical Carbine Buffer Assembly Kit is just what you need to finish off your lower with quality components. This kit is perfect for those who either already have their own stock to use or just want to pick a different stock that isn't available from Spike’s Tactical. Inside the kit you will find a Mil-Spec buffer tube with dry film lube, latch plate, castle nut, Mil-Spec 17-7 stainless buffer spring, ST-T2 buffer, and it of course comes with a LIFETIME warranty from Spike's Tactical.

Our Price: $69.99
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Fortis Mfg QD Receiver End Plate Fortis Mfg - QD Receiver End Plate

The Fortis QD Receiver End Plate features the quick detach swivel socket. Can be used on new builds or adding to existing rifles and replaces the existing receiver end plate (egg plate) used with carbine style buffer tubes for the AR15 & 308 platforms.

List Price: $22.95
Our Price: $21.99
Savings: $0.96
In Stock
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Spike's Tactical Pistol Buffer Tube Assembly

If your building a pistol based AR15 then you will want to go with a pistol buffer tube likes this from Spike's Tactical. Of course it's quality made and includes a 17-4 stainless buffer spring and the infamous ST-T2 buffer, it also one of the few true pistol buffer tubes to use a receiver end plate and castle nut (both included). The other cool feature unique the Spike's Tactical Pistol Buffer Tube Assembly is that they integrated a QD socket on the rear of the tube so you can attach your QD equiped sling to the end.

Our Price: $69.99
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Phase 5 Tactical Pistol Buffer Tube Foam Pad Phase 5 Tactical - Pistol Buffer Tube Foam Pad

Replace your worn out foam pad on the your Phase 5 Tactical Pistol Buffer tube or can be installed on other manufacturers AR pistol buffer tube measuring 1.25" in diameter. 3.5" inches in length yet still short enough to clear charging handle.

Our Price: $7.95
In Stock
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MAGPUL Ambidextrous Sling Attachment Point - ASAP Receiver End Plate MAGPUL - Ambidextrous Sling Attachment Point - ASAP Receiver End Plate

The Magpul ASAP Receiver End Plate Ambi Sling Attachment point. offers a 180 degree range of motion of the sling attachment point and can be used by both left or right handed shooters. This sling mount gives the shooter a tactical advantage allowing a full range of motion and minimizes binding while switching shoulders. This is particularly important in situations such as shooting around corners or if the shooter was injured. The ASAP is designed for use with Paraclip style sling attachment points.

Our Price: $26.95
In Stock
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KAK Industry - Super SIG SB-15 Buffer Tube KAK Industry - Super SIG SB-15/SBX Pistol Buffer Tube

KAK Industry Super Sig SB-15 dedicated pistol buffer tube.

List Price: $42.00
Our Price: $39.99
Savings: $2.01
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Phase 5 Tactical - Pistol Buffer Tube

Phase 5 Tactical AR-15 Pistol Buffer Tube.


Includes: Buffer tube, Mil-Spec End Plate, Mil-Spec Castle Nut and Foam Rest Pad.

Our Price: $49.95
In Stock
(4)
Phase 5 Tactical HexOne Pistol Buffer Tube Phase 5 Tactical - HexOne Pistol Buffer Tube

Phase 5 Tactical HexOne Pistol Buffer Tube
Includes: Hexone (hex shaped) Buffer tube, Mil-Spec End Plate, and Mil-Spec Castle Nut, Carbine Buffer, and Carbine Buffer Spring.

Our Price: $49.95
In Stock
Magpul ASAP QD Ambidextrous Sling Attachment Point Magpul - ASAP QD Ambidextrous Sling Attachment Point

Mapul has taken their ultra popular (ASAP) Ambidextrous Sling Attachment Point Receiver End Plate to the next level with the introduction of the Ambidextrous Sling Attachment Point  Quick Detach (ASAP-QD). Their version of the Q.D. Receiver End Plate is precision cast, black Melonite finished steel and is compatible with both mil-spec and commercial receivers extension tubes.

Our Price: $28.95
In Stock
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KAK Industry- Sig Tube Length Adjustment Ring Kit KAK Industry - Sig Tube Length Adjustment Ring Kit

Used for adjusting the length of the Sig brace for proper fit on the forearm.

Our Price: $11.99
In Stock
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Fortis MPSA Receiver End Plate - Ambi Fortis Mfg - Multi-Point Sling Adapter (MPSA) - AMBI - Receiver End Plate

The Fortis MPSA Multi-Point Sling Adapter features the 2 most popular sling attachments in one. (Quick Detach Swivel & Loop). Can be used on new builds or adding to existing rifles and replaces the existing receiver end plate (egg plate) used with carbine style buffer tubes for the AR15 & 308 platforms.

List Price: $22.95
Our Price: $21.99
Savings: $0.96
In Stock
PHASE 5 Tactical - Revolving Sling Attachment (REVO) Receiver End Plate

The Phase 5 Tactical™ Revolving Sling Attachment Solution (REVO-SAS)™ was developed to solve problems that come with other attachment methods. The REVO-SAS™ is an ambidextrous rear sling attachment solution that moves from left to right freely, smoothly and quietly.  The REVO also has patent pending technology developed to limit the amount of rotation internally and eliminates external issues completely. The REVO-SAS™ is machined from billet steel for maximum strength and durability. Comes with a Phase 5™ custom machined castle nut specifically included to fit with Mil-spec buffer tubes and comes in a mil-spec phosphate finish.

Our Price: $64.99
In Stock
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Fortis MPSA Receiver End Plate LH Fortis Mfg - Multi-Point Sling Adapter (MPSA) - Left Hand

The Fortis MPSA™ Multi-Point Sling Adapter features 2 most popular sling attachments in one. (Quick Detach Swivel & Loop). Can be used on new builds or adding to existing rifles and replaces the existing receiver end plate (egg plate) used with carbine style buffer tubes for the AR15 & 308 platforms.

Left Hand Version

List Price: $22.95
Our Price: $21.99
Savings: $0.96
In Stock
RBA - Milspec Buffer Tube Assembly 6-Position

100% USA parts, with the option to upgrade the receiver end plate.

List Price: $69.95
Our Price: $49.99
Sale Price: $39.99
Savings: $29.96
(Out of Stock)
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UTG PRO 6 Position Mil-Spec Stock Assembly - Black (US made)

UTG PRO 6-Position Mil-spec Stock Assembly - Black, Complete with 6-Position Mil-spec Polymer Stock, Mil Spec Receiver Extension Tube (buffer tube), Carbine Buffer Spring, Premium Carbine Buffer, Tear-drop Ring and Castle Nut. Made in USA

Our Price: $54.99
(Out of Stock)
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RBA 6-position Mil-Spec Receiver Extension (buffer tube) RBA - 6-position Mil-Spec Receiver Extension (buffer tube)

Mil-Spec, 6 position Receiver Extension.

Our Price: $24.99
(Out of Stock)
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Phase 5 Tactical Pistol Buffer Tube Assembly Phase 5 Tactical - Pistol Buffer Tube Assembly

CNC Machined from 7075, the Phase 5 Pistol Buffer Tube (PBT) Assembly, is a great choice when building an AR pistol. One of the few Pistol buffer tubes kits to accommodate a castle nut in additions to the receiver end plate so you know it will stay in place.

Phase 5 Tactical AR-15 Pistol Buffer Tube Assembly Includes: Buffer tube, Spring, Carbine Buffer, Mil-Spec End Plate, Mil-Spec Castle Nut and Foam Rest Pad.

Our Price: $69.95
(Out of Stock)
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Phase 5 Tactical Hex-2 Pistol Buffer Tube Phase 5 Tactical - Hex-2 Pistol Buffer Tube

Phase 5 Tactical Hex-2 Pistol Buffer Tube

Includes: Hex / smooth shaped Buffer tube, Mil-Spec End Plate, Mil-Spec Castle Nut and foam pad.

Our Price: $59.99
(Out of Stock)
(6)
Phase 5 Tactical Hex-2 Pistol Buffer Tube Assembly Phase 5 Tactical- Hex-2 Pistol Buffer Tube Assembly

Phase 5 Tactical Hex-2 Pistol Buffer Tube

Includes: Hex/ Smooth Shaped Buffer tube, Mil-Spec End Plate, Mil-Spec Castle Nut, Carbine Buffer, Carbine Buffer Spring, and Foam Pad.

Our Price: $78.99
(Out of Stock)
(11)
Phase 5 Tactical HexOne Pistol Buffer Tube Assembly Phase 5 Tactical - HexOne Pistol Buffer Tube Assmbly

Phase 5 Tactical HexOne Pistol Buffer Tube Assembly
Includes: Hexone (hex shaped) Buffer tube, Mil-Spec End Plate, and Mil-Spec Castle Nut, Carbine Buffer, and Carbine Buffer Spring.

Our Price: $69.95
(Out of Stock)
ALG Defense True Mil-Spec Buffer Tube, 6-position ALG Defense - True Mil-Spec Carbine Buffer Tube - 6-position

Made from a 7075-T6 forging, the ALG 6-position carbine buffer tube is almost twice the strength of buffer tubes made from 6061, and the ALG Defense names ensures you are getting a well made product that you can count on.

Our Price: $37.99
(Out of Stock)
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For a mil spec buffer tube kit or full assembly you can select from Phase 5, RBA (Red Barn Armory) or Spike's Tactical. Spike's heavy ST-T2 buffer is maintenance free and provides what some consider the quietest, smoothest, softest shooting experiences out there. You'll find lots of pistol buffer tube assemblies here. If you're putting together a pistol-based AR-15, Spike's can't be beat with their combination 17-4 stainless steel spring and highly rated ST-T2 buffer. It includes the receiver endplate, castle nut and QD socket to attach your sling.