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DAVID TUBB - AR-15/CAR-15/ 308 AR STAINLESS STEEL SPRINGS

27 Reviews

Make Model Fit

AR-15.Universal
AR-308.Universal

Brownells #

840000047, 840000048

MFR #

ARBUFSR, ARBUF

UPC

$33.99 - $34.99

Purchase Limit

In stock

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What is the DAVID TUBB - AR-15/CAR-15/ 308 AR STAINLESS STEEL SPRINGS?

These flat wire, high-quality action/buffer springs from champion shooter David Tubb will perform flawlessly and are duty rated for 500,000 compression cycles at maximum performance. Made to “extra power” specs without the extra material, these springs are surprisingly lightweight, yet exttremely durable. Gives correct timing and resistance on the recoil stroke and a controlled rebound ensures reliable feeding with consistent forward thrust on every shot. Keeps the bolt locked a little longer to allow pressures more time to subside for perfect cycling.

SPECS: Stainless steel. AR-15 fits both fixed and collapsible stocked AR-15 rifles and carbines without modification to spring or gun. AR-10 .308-style fits both AR-10 and SR-25/LR-308 platform Rifles and Carbines with either rifle or carbine receiver extensions.

See all of our AR15s and AR15 parts here.

Available options

Image	Description
	308AR Stainless Steel Buffer Spring Brownells #: 840000047
	AR-15 Stainless Steel Buffer Spring Brownells #: 840000048

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AR-15/CAR-15/ 308 AR STAINLESS STEEL SPRINGS REVIEWS

4.2

27 Reviews

5 Stars

78%

4 Stars

3 Stars

2 Stars

1 Stars

15%

Reviews Summary

Customers rave about the AR-15/CAR-15/308 AR's stainless steel springs, noting their smooth action and lower recoil. Many find them essential for tuning performance and reliability with various setups. However, some experienced cycling issues, often linked to gas system compatibility. Overall, they seem to enhance shooting experience but may not be a universal fit for all rifles.

What Reviewers Are Saying

Product Performance

70%

Many users appreciate the smooth operation and reduced recoil these springs provide, highlighting their effectiveness in improving cycling and reliability across various rifle setups. However, some had issues with cycling in specific configurations, suggesting careful consideration of rifle type and gas system before purchase.

Installation Experience

50%

While most reviewers report straightforward installation, a few mention complications fitting the springs into buffer tubes, especially in certain rifle configurations. Proper understanding of compatibility is crucial for successful installation.

Reliability

60%

Overall, customers report high reliability in their builds post-installation. Some note issues with malfunctioning when the proper gas system and buffer weights are not utilized, indicating that expertise in AR setups is beneficial.

Value for Money

65%

Reviewers generally find the springs provide good value, especially considering their durability and performance enhancements compared to stock springs. Customers appreciate the potential longevity, citing duty ratings of over 500,000 cycles.

Noise Level

40%

A number of reviews mentioned that while the flat wire springs improve performance, they also produce a more noticeable sound compared to round wire springs. Some found this sound bothersome, which could be a consideration for those sensitive to noise.

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Tube flat spring

Haven’t installed yet but looks good and shipping from Brownells was fast as always

by EVAN MAPES on July 17, 2025

Verified Purchase

Was this review helpful? 0

Excellent springs, but try the .308 in a 5.56!

I bought both a 5.56 and .308 spring. My rifle uses an A5 buffer system (A5H2 buffer) and Faxon 18-inch barrel with rifle-length gas system. I have found that using the .308 spring in this 5.56 rifle results in a super smooth-shooting, light-recoiling experience, with good ejection pattern and reliability. These springs are fantastic, but don’t rule out using the heavier .308 spring in your AR-15. But as always, YMMV, so test it out for yourself!

Would you recommend this? Yes, I would recommend to a friend

Great spring

I just bought two of these spring for other projects I'm working on. I recently installed one on a POF full size 308 that was not cycling. The gun ran perfect after the install. No jams, no malfunctions.

Works Well

I installed this in an Aero 308 build with no problems. It was a little fiddley getting in the buffer tube, but has functioned well, and smoothly. Can't speak to the 500,000 cycle life, but so far it's been a good choice.

This spring requires some thought

As stated before, if you are under gassed already, don't buy this spring unless you plan on cutting coils to suite/tune your rifle. After all, that is not that difficult for somebody with some smarts. This thing is ideal for carbine gas length 16 inch barrels suppressed or unsuppressed. Do not install it into a 16 inch mid-length or an 18 inch barrel with a rifle length gas tube unless you plan on cutting coils to tune it. These springs are the best of the best. Just required a little thought and planning with regards to your application.

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DAVID TUBB - AR-15/CAR-15/ 308 AR STAINLESS STEEL SPRINGS

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AR-15/CAR-15/ 308 AR STAINLESS STEEL SPRINGS REVIEWS

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