Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Enjoy free shipping during the holidays! Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.

Enjoy Our Extended FREE RETURNS

We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later). We'll even cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
Questions & Answers
Will this work with a Magpul PRS Lite Rifle Stock paired with a KynSHOT AR-15 .223/5.56mm Buffer for Fixed Stock?

The RE-A5 will work with the PRS Lite stock, however we recommend only using our A5 Buffers with this tube for the AR-15 platform.

by VLTOR, Verified Owner, October 29, 2025
Will a typical Magpul stock (CTR, MOE, etc) cover this when fully collapsed? Or is it too long to get that short of a LOP? Thank you,

The MOE-SL and STR will collapse fully on the RE-A5 tube. We don't have data on the other stocks.

by VLTOR, Verified Owner, September 10, 2025
Customer Reviews
Helpful Positive Review
As advertized! Well made! I used this to long stroke a 9 mm AR with a Kynshot hydralic buffer, orange Sprinco . 308 spring, and Kynshot tunsten buffer weight to migigate recoil inpulse.
1/1 found this helpful
Helpful Positive Review
I replace all of my buffer systems on my carbines with this. It makes the recoil impulse so minimal I have nothing to compare it to. I’m so used to shooting them now that regular carbine buffer systems feel like a 308 to me.
3/3 found this helpful
Helpful Positive Review
Perfect extension by Jc, Verified Owner, January 31, 2021
In spec tube for one of the smoothest recoiling systems for the AR platform! I would recommend this system for anything12.5 and under as it pretty much eliminated any recoil for me on my properly gassed ARs.
4/4 found this helpful
Helpful Positive Review
VLTOR A5 Receiver Extension by Troy, May 28, 2019
VLTOR A5 Receiver Extension/System is a great product and should help with slowing down the BCG on my DD MK18. Optics Planet is a great company to do business with. My only issue was with FedEx and the 2 day shipping. I ordered the item on 5/6/19 ...
Read More...
4/4 found this helpful
Most Recent Reviews
Vltor A5 Buffer Tube by deviant, Verified Owner, November 26, 2025
The Vltor buffer system was a really nice addition to my ar build, paired with the A5H2 buffer, the frt ran flawless!
Most Recent Reviews
Must have for AR 15's by Nate, Verified Owner, October 23, 2025
This is a game changer in terms of making an AR shoot even smoother and softer, and although it is slightly longer than a standard carbine buffer mine didn't add any length to my stock because I was already using a slightly longer Magpul stock. Stro...
Read More...
Read All 14 Reviews
Eligible models will have a savings offer. Apply coupon and add the item to your cart for savings on that select model! Limited time only. Cannot be combined with other promotions or offers. See promotion details.
Additional Features: Receiver extension is Mil-Spec dimensioned and will only accept M4 type Mil-Spec buttstocks , Receiver is designed to use the VLTOR A5 spring and buffer kit only which is sold separately , Space between the seven positions of the receiver extension 0.650 in Condition: New

Code: 24Y-RBT-REA5-EE

MPN: RE-A5

12%
Product Discount
List: $54.95Save $2.96
$51.99

Product Info for Vltor REA5 A5 Receiver Extension RE-A5 M4 Aluminum Black

Vltor REA5 A5 Receiver Extension RE-A5 M4 Aluminum Black - The RE-A5 Receiver Extension is a seven position receiver extension designed to work with the VLTOR A5 system. This receiver extension is slightly longer than the traditional M4 receiver extension and is designed to work with Mil-Spec dimensioned M4/AR-15 type collapsible stocks. It is made from impact extruded 7075-T6 aluminum with hard coat anodized finish. The positions are numbered and are visible through the witness hole on most stocks. It helps with snag-free sliding of the buttstock.image

WARNING: California`s Proposition 65

Specifications for Vltor REA5 A5 Receiver Extension RE-A5 M4 Aluminum Black:

Mfg Item Num:  REA5
Supplier SKU:  99495
Category:  FIREARM PARTS
Type:  Extension Tube
Model:  M4
Finish:  Black
Material:  Aluminum

Features of Vltor REA5 A5 Receiver Extension RE-A5 M4 Aluminum Black:

  • Seven position receiver extension made from impact extruded 7075 T6 aluminum
  • Hard coat anodized
  • Positions are numbered and are visible through the witness hole on most stocks
  • Snag-free sliding of the buttstock

Vltor REA5 A5 Receiver Extension RE-A5 M4 Aluminum Black Orderable Models

List of Orderable Models

  • Vltor REA5 A5 Receiver Extension RE-A5 M4 Aluminum Black , MPN: RE-A5 , Code: 24Y-RBT-REA5-EE

Vltor REA5 A5 Receiver Extension RE-A5 M4 Aluminum Black Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Vltor REA5 A5 Receiver Extension RE-A5 M4 Aluminum Black , MPN: RE-A5-EDEMO , Code: 24Y-RBT-REA5-EDEMO-RE-C
  • USED Vltor REA5 A5 Receiver Extension RE-A5 M4 Aluminum Black, EDEMO9, Used, Condition Like New , MPN: RE-A5-EDEMO9 , Code: 24Y-RBT-REA5-EDEMO9
  • USED Vltor REA5 A5 Receiver Extension RE-A5 M4 Aluminum Black, EDEMO10, Used, Condition Fair , MPN: RE-A5-EDEMO10 , Code: 24Y-RBT-REA5-EDEMO10
Compare (0)