PDW Buffer Tube, Spring & Buffer Kit for Strikes Viper Stocks & Braces - Gen 2

Question

Q: I am currently trying to get a super safety to work with district industries PDW stock. I'm getting light strikes and according to atrius this is usually caused by the buffer and spring not being heavy enough. Is the heavy option buffer and spring heavier than What comes from strike industries?

Asked by: Andrew Martin - 5/6/2026

Q: Is there an H3 buffer option?

Asked by: ace case 438 - 7/27/2025

Q: Is there ears for the buffer retaining pin? It doesn't show in the picture and I have seen the original viper tube has them and why this one doesn't have it?

Asked by: johnjohnlepocon - 9/29/2024

Q: I’m running 7.5” 300blk suppressed with strike industries pdw brace having cycling issues also added adjustable gas block still has not fixed the problem. Would this kit do the job and if so which buffer and spring should I go with?

Asked by: Jake - 8/12/2024

Q: Is the pistol caliber buffer only compatible with pistol caliber? Is it because if the size of the round (ie dimensions)? Or can it fit in a 5.56 system. I am curious because the weight is similar to that of a H4 buffer. Would like the benefits of a heavier buffer. Thank you

Asked by: Zulu - 5/14/2024

Q: What make the included buffer tube different than the one from Strike Industries so that it can accept the buffers included in your kit?

Asked by: Luz - 5/14/2024

Q: Hello, is it possible to drop in a 3rd party buffer into this system if need be? For example if I want to use a standard H3 or H4 buffer? Are the buffers in this kit industry standard buffers? Thank you

Asked by: Zulu - 5/8/2024

Q: I have a 5.5 ar chambered in 9mm. It is select fire. Which buffer weight would be recommended? The h2 or the pistol?

Asked by: Jimmy Zaragoza - 2/26/2024

Q: I have a 5” 5.56 what weight buffer would I need? And the stock viper tube length won’t work?

Asked by: Jay - 1/10/2024

Q: If I have the viper pdw brace already, do I have to get the tube and spring also or can I purchase the buffer alone? Also is the cqb buffer compatible with the hbpdw honey badger brace?

Asked by: Karl Chambers - 11/24/2023

Questions about this item? Ask here.

Accepted Answer

You would need the our Strikes Industries Viper Kit: buffer tube, spring and buffer. This will still not get you to run a super safe to run reliability though. What we have found that ties it all together is our Enhanced Bolt Carriers, we have a polymer that we use on the end that absorbs some of the shock which prevents carrier bounce. We have known this due to we run full auto, but now that FRT's are on the market this is what our customers use to resolve their FRT issues. This is a link to our Enhanced Bolt Carriers and on that page is a video that shows our founder demonstrating our Enhanced Bolt Carrier with a FRT compared to an all steel carrier. https://www.blackriflearms.com/ENHANCED-BOLT-CARRIERS-_c_10.html

Accepted Answer

A: Sorry we do not offer an H3 PDW buffer.

Answer provided by: Administrator (8/1/2025)

Accepted Answer

You do not need the ears to go around the retaining pin, the ears do not hold the retaining pin in place so we designed it just like a mil-spec receiver extension/buffer tube.

Accepted Answer

We don't know how your firearm is gassed so we can't give you an definitive answer; however, some customers with similar builds have found that Enhanced Compact Buffer Tube with Light Spring & Carbine or H2 buffer has resolved similar issues.

Accepted Answer

A: Yes pistol buffer is only for pistol calibers.

Answer provided by: Administrator (5/20/2024)

Accepted Answer

Our spring and buffers are of different dimensions than the Viper PDW. Our buffers will not work with Strikes springs.

Accepted Answer

No you can't. The whole kit is a PDW that was specc'd out to work in combination with each other. You can't mix mil-spec and PDW with this kit.

Accepted Answer

The pistol buffer is meant for pistol caliber AR-15, so pistol buffer would be what you need to select for your setup.

Accepted Answer

Typically and most likely a H2 buffer; however, we can't guarantee that is what you would need as we don't know how your firearm is gassed. Yes you have to use our buffer tube to make the system work.

Accepted Answer

You have to buy the kit in order for the setup to work. All the components are finely tuned (specc'd) to work together.

PDW Buffer Tube, Spring & Buffer Kit for Strikes Viper Stocks & Braces - Gen 2

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PDW Buffer Tube, Spring & Buffer Kit for Strikes Viper Stocks & Braces - Gen 2

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