Enhanced Buffer, Spring & Buffer Tube Assemblies for Viper PDW Stocks & Braces

Enhanced Compact Buffer Tube, Spring & Buffer Assemblies for Viper PDW Stocks & Braces - Gen 2

Your Price: $89.99

Questions about this item? Ask here.

Part Number: STVPRBFR

Availability: In Stock

PDW Enhanced Buffer Tube, Spring & 1-Qty Buffer - Choose Buffer Weight *

Carbine Buffer H2 Buffer (+$26.99) Pistol Caliber Buffer (+$44.99)

COMPACT SPRING OPTIONS

Standard PDW Compact Spring Light PDW Compact Spring - Recommended for 300BLK

Quantity

Description
Questions and Answers
Disclaimers

Gen 2 Enhanced Compact Buffer Tube, Spring & Buffer for Viper PDW Stocks & Braces

Black Rifle Arms patented Enhanced Compact Buffer Tube, Spring & Buffer Tube Assembly allows for Strike Industry Viper PDW Stocks and Braces to be finely tuned with different buffer weights from Carbine, H2 and Pistol.

Our pistol buffer enables the Strike Industry Viper PDW stock and braces to run pistol calibers. The receiver extension (buffer tube) is 5 5/8" in overall length. This kit is a drop in replacement and you can utilize the Strikes cheek piece, as well. The H2 buffer ensures reliable operation with select-fire weapons.

Kit Includes 1-Qty each:

Spring
Buffer Tube - Gen 2

Flutes on receiver extension allows Strikes Cheek Rest to be utilized
Hybrid tube has a relief cut to enable the use of an End Plate and Castle nut should it become necessary to convert to a pistol tube. (See our Compact Pistol Tube Kit)
Machined from Aircraft quality aluminum billet
Mil-spec Hard coat anodized finish

Buffer (buffer weight options, left to right per picture)

Carbine Buffer weight 3.15 oz
H2 Buffer weight 4.60 oz.

H2 Buffer is recommended for full-auto use

Pistol Caliber Buffer weight 7.45 oz

Pistol buffers are not compatible with Radial Delay Blowback Systems. In case of the Radial Delay Blowback use PDW Carbine or PDW H2 Buffers.

An example of a Strike Industries Viper PDW Stock being converted over to our compact buffer, spring with buffer tube assembly to allow for adjustability of buffer weights.
Rifle not included

View all Q&A

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

A: 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.

Answer provided by: Administrator (10/1/2024)

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

A: 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.

Answer provided by: Administrator (8/29/2024)

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

A: Yes pistol buffer is only for pistol calibers.

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

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

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

Answer provided by: Black Rifle Arms Sales Team (6/17/2024)

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

A: 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.

Answer provided by: Black Rifle Arms Sales Team (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

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

Answer provided by: Administrator (2/28/2024)

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

A: 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.

Answer provided by: Administrator (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

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

Answer provided by: Black Rifle Arms Sales Team (11/24/2023)

Q: I have another question. The buffer tube, does it have the little teeth like things to hold the detect in place? From the picture I don’t see if it does or not.

Asked by: Eddie - 11/1/2023

A: No it's not a feature on the buffer tube. As long as your tube is secured properly with the castle nut your tube is not going to move.

Answer provided by: Administrator (11/8/2023)

Q: Does the buffer tube have the part where it goes over the buffer retainer?

Asked by: Elliott - 11/1/2023

A: No that is not a feature on our PDW buffer tube. If buffer tube is secured properly with the castle nut your buffer tube is not going to move.

Answer provided by: Administrator (11/8/2023)

Questions about this item? Ask here.

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CHECKOUT MINUMUM & SHIPPING DESTINATIONS

TIMEFRAME TO FULFILL YOUR ORDER

AVERAGE SHIPPING TRANSIT TIMES
NOT INCLUDING HOLIDAYS

Enhanced Compact Buffer Tube, Spring & Buffer Assemblies for Viper PDW Stocks & Braces - Gen 2

Choose Options

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?

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?

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

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?

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

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?

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

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?

Q: I have another question. The buffer tube, does it have the little teeth like things to hold the detect in place? From the picture I don’t see if it does or not.

Q: Does the buffer tube have the part where it goes over the buffer retainer?

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CHECKOUT MINUMUM & SHIPPING DESTINATIONS

TIMEFRAME TO FULFILL YOUR ORDER

AVERAGE SHIPPING TRANSIT TIMESNOT INCLUDING HOLIDAYS

Enhanced Compact Buffer Tube, Spring & Buffer Assemblies for Viper PDW Stocks & Braces - Gen 2

Choose Options

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?

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?

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

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?

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

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?

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

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?

Q: I have another question. The buffer tube, does it have the little teeth like things to hold the detect in place? From the picture I don’t see if it does or not.

Q: Does the buffer tube have the part where it goes over the buffer retainer?

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AVERAGE SHIPPING TRANSIT TIMES
NOT INCLUDING HOLIDAYS