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Questions & Answers
Is this compatible with buffers from vltor A5 system? Expert Answer

According to VLTOR the VLTOR A5 buffers can only be used with VLTOR A5 buffer assembly components. So it will most likely not work with the Geissele Rifle Length Spring, 42 in. However, I recommend contacting VLTOR to confirm.

by Hunter, Gear Expert, July 8, 2022
will this work on a Strike Industries AR Mil-Spec Buffer Housing Expert Answer

This Geissele Rifle Length Spring is a rifle length spring designed for rifle length buffer tubes. You would need a carbine length spring.

by Ethan, Gear Expert, August 12, 2022
Customer Reviews
Helpful Positive Review
Best spring ever! by Rocky, Verified Owner, January 15, 2026
Hands down the best spring made for AR's. Eliminates the twang and runs a RareBreed frt with H2 buffer flawlessly on my BCM!
1/1 found this helpful
Helpful Positive Review
Great Spring, Received Quickly by Joe, December 12, 2023
Excellent spring, quiets the “twang”. Very fast delivery—Optics Planet has really upgraded their delivery system. It used to take weeks (pre-Covid) to get stuff.
2/3 found this helpful
Helpful Positive Review
I think this GA rifle spring is a decent upgrade. Especially on sale… Can’t really grade how quiet it is compared to something like the Sprinco green springs I usually use.. used this with a Geissele URGI near clone 11.5 inch upper and an A5H2 buffer...
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7/7 found this helpful
Helpful Positive Review
Best spring by far by Don Rob, Verified Owner, January 17, 2025
Put in an AR that runs hard and literally kills springs, after replacing the buffer spring a few times and having same result of working perfectly first time out shooting then all the sudden running super slow as the spring is dying. Decided to try t...
Read More...
2/2 found this helpful
Helpful Positive Review
Nice buffer by Adam, Verified Owner, January 22, 2025
Works great in a phase 5 rifle length hex tube. definitely quieter that a standard spring. Cycles 11.5-17" 5.56 and 8" 300 blk subs and supers perfectly. Makes a great "do all lower" buffer system.
1/1 found this helpful
Helpful Positive Review
Ruger SFAR by Elliott Jones, Verified Owner, December 26, 2024
This product will work in a Ruger SFAR buffer tube. Must be Rifle length spring. Ruger SFAR uses a carbine buffer weight and proprietary buffer spring. You can use this spring for SFAR to slow down the bolt cycle. I used it to cure over gassing issue...
Read More...
1/1 found this helpful
Read All 25 Reviews
Finish:
Type 3 Hard Coat Anodized
Fabric/Material:
Steel
Gun Make:
AR Platform
Gun Model:
AR-15, M16
Gun Type:
Rifle
Length:
42 in
Weight:
10 oz
Condition:
New

Code: 1TO-BUS-RFLS-04-308

MPN: 04-308-F

UPC: 817953026328

List: $34.00
$33.99

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OP Bucks$0.68

Product Info for Geissele Super 42 Rifle Length Spring

The Super 42 Rifle Length Spring for the M-16/AR-15, brings you the performance and user experience improvement of the Super 42 spring for your rifle length buffer tube. This unique spring design uses three independent strands of wire, that acts as a harmonic damper and energy absorber by allowing the springs to flex separately from each other. This flex helps displace excess energy which decreases the chance of spring failure and assists with making your M-16/AR-15 rifle more reliable while diminishing the twang sound from the butt-stock. The Geissele M-16/AR-15 Super 42 Rifle Length Spring works with a standard rifle length buffer and buffer tube.image

WARNING: California`s Proposition 65

Specifications for Geissele Super 42 Rifle Length Spring:

Manufacturer: Geissele
Finish: Type 3 Hard Coat Anodized
Fabric/Material: Steel
Gun Make: AR Platform
Gun Model: M16, AR-15
Gun Type: Rifle
Length: 42 in
Weight: 10 oz
Condition: New

Package Contents:

  • Geissele Super 42 Rifle Length Spring

Geissele Super 42 Rifle Length Spring Orderable Models

List of Orderable Models

  • Geissele Rifle Length Spring, 42 in for AR-15/M-16, 04-308-F , MPN: 04-308-F , UPC: 817953026328 , Code: 1TO-BUS-RFLS-04-308
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