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Questions & Answers
Is it compatible with any of the Geissele super spring?

It needs to be the Rifle Length Spring.

by VLTOR, Verified Owner, September 3, 2025
What is the OD of the tube itself? Would it need to be turned down to fit a Tail Hook MOD 1C?

The OD of the tube is 1.17". We do not know if the Tail Hook MOD 1C will work.

by VLTOR, Verified Owner, September 10, 2025
Customer Reviews
Helpful Positive Review
Don't hesitate worth every penny! by JinAZ, July 24, 2018
I'm running one of these on a PSA Lower with SBA3 brace, & 11.5 BCM 556 upper. I have 3 other AR pistols and all my buddies run pistols too. The AR with this kit is the softest shooting AR pistol I've ever run and my buddies drool over it. As fo...
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5/6 found this helpful
Helpful Positive Review
Better than a standard kit by Heed, Verified Owner, February 29, 2020
I'm glad I found out about this kit and tried it out. It was what I needed for an overgassed spikes barrel and a tailhook. In the end I ended up using something different, but I may use this on another build in the future. Supposedly this adds rel...
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2/2 found this helpful
Helpful Positive Review
I did some research and spoke with several members of the Military and also armorer's that shoot or carry a MK18 type weapon. I was informed to use the Vltor A% kit for my AR pistol build and could not be happier. Since I am still in the middle of ...
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1/1 found this helpful
Most Recent Reviews
Best for 10.5 barrels by Bobby, Verified Owner, October 20, 2017
Bought this for my mk18 DD and it def slowed down the bolt speed. Works suppressed, non suppressed. Also gives a longer length of pull. I will start changing our most of my buffers for vltor a5 eventually. Soft recoil and soft shooting for sure! Wort...
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0/1 found this helpful
Most Recent Reviews
Smooth and Reliable by C Alaska, Verified Owner, August 4, 2019
Not like you have a lot of recoil from a .223, but this is one more product that just sets your build apart from others. I have the Vltor A5 on 2 builds and they both are softer shooting without compromising reliability. If your looking to add that e...
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Read All 5 Reviews

14% OFF Firearm Parts

PBFDClick to Copy Coupon Code
Eligible models will have a savings offer and the coupon code to use below. Add the item to your cart and enter coupon code for savings on that select model! Limited time only. Cannot be combined with other promotions or offers.
Condition: New

Code: 24Y-BFA-VLRAPK-VPK-A5

MPN: VPK-A5

List: $120.95Save 10%
$108.86

Product Info for Vltor A5 Pistol Kit

Released for 2015, you can now convert your AR pistol to the patented VLTOR A5 system! The A5 system is considered to be the most innovated upgrade for the AR platform, increasing the reliability and performance of any weapon. It is proven in reducing the cyclic rate of M4 carbines, lowering the bolt carrier velocity and eliminating the felt recoil. • Made from extruded 7075 T6 aluminum • Milspec Hard Coat Anodize Black • Internal of tube is dry film lube coated • Comes complete with VLTOR A5 components: milspec rifle spring and A5H2 (5.3oz) buffer • Includes VLTOR lock plate and lock nut • Compatible with most arm braces• Diameter of Tube: 1.18" • Overall Length of Tube: 8.23" • Length of tube from the end to the knurling: 6.45" • Weight including all hardware: 13.40 ozimage

Specifications for Vltor A5 Pistol Kit:

Manufacturer: VLTOR
Condition: New

Package Contents:

  • Vltor A5 Pistol Kit

Vltor A5 Pistol Kit Orderable Models

List of Orderable Models

  • Vltor A5 Pistol Kit, Black VPK-A5 , MPN: VPK-A5 , Code: 24Y-BFA-VLRAPK-VPK-A5

Vltor A5 Pistol Kit Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Vltor A5 Pistol Kit, Black VPK-A5 , MPN: VPK-A5-DEMO , Code: 24Y-BFA-VLRAPK-VPK-A5-DEMO
  • USED Vltor A5 Pistol Kit, Black VPK-A5, EDEMO10, Used, Condition Like New , MPN: VPK-A5-EDEMO10 , Code: 24Y-BFA-VLRAPK-VPK-A5-EDEMO10
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