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Geissele Super 42 Rifle Length Spring
$51.74 $34.89 Save 33%
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Most Helpful Positive Review Silence is golden
Purchased this to go in my 18" "SPR" type build I put together several years ago. Rifle has a plane jane A2 stock/rifle length tube setup, rifle lenght gas. Rifle has been a sweet shooter since day one...dead-nuts reliable and soft shooting. Only thing that sucked was that A2 twang. Decided to give this a try with some OpticsPlanet bucks I had. Surprised to say it all but eliminated any sound from the stock.
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Buffer spring

by Jose A. Sanchez, Verified Owner from TX, United States Written on May 1, 2026
Was concerned about fitting my buffer, but no problems. Doesn't bind up. Would refer to it as my go-to or default option.
Pros:
  • Reliable, consistent operation.
Cons:
  • a little stiff at first
Best Used for:
  • Long term, heavy use
Would recommend: Yes
Was it helpful to you? Yes | No

Back plate and buffer spring

by GH, Verified Owner from TX, United States Written on April 28, 2026
Items arrived in a timely manner and performed great on the build
Would recommend: Yes
Was it helpful to you? Yes | No

Best rifle spring

by Aaron B., Verified Owner from OH, United States Written on March 31, 2026
The coiled spring definitely reduces the noise of the action. I do also notice on my safe lowers that the spring does reduce the bolt bounce and smooths out the recoil impulse. I will not buy another type of spring other than this series.
Would recommend: Yes
Was it helpful to you? Yes | No

Best buffer

by Tony H., Verified Owner from TX, United States Written on March 22, 2026
Quite and strong with my h2 buffer set up..ran it with a frt set up. No hiccups at all.no twang sounds..great product for the price
Pros:
  • Very
  • This is a very easy install.. it is very quite
  • Very easy install and its quite! Seems it will last a long time
Cons:
  • Nothing bad to say about it
Best Used for:
  • Best used for frt ,super safetys, and regular weight systems
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

300 Blackout

by Chas, Verified Owner from AL, United States Written on March 10, 2026
I purchased this Geissele Super 42 Rifle Length Spring for my AR 15 300 Blackout, as I was having problems with the rifle cycling the spend cartridge and this fixed my problem.
Would recommend: Yes
Was it helpful to you? Yes | No

g$ 42 braided spring

by J, Verified Owner from TX, United States Written on January 31, 2026
Used to pair with an a5 buffer. Great spring. Quality product.
Would recommend: Yes
Was it helpful to you? Yes | No

geissele buffer spring

by john doe, Verified Owner from AL, United States Written on January 30, 2026
The quality and redundancy of this is worth the money if you got a little extra money to throw at a build and is definitely worth having in a more “Duty” type rifle that you’re wanna run full time
Pros:
  • Quality
  • redundancy
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

Best spring ever!

by Rocky, Verified Owner from AL, United States Written on 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!
Pros:
  • Stronger than regular spring with its 3 wire coil
Cons:
  • None
Best Used for:
  • Running a RareBreed FRT
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Super 42 buffer

by Tav, Verified Owner from NV, United States Written on December 28, 2025
Works well, nice upgrade in feel from standard carbine buffer spring.
Pros:
  • A +
Cons:
  • None especially at price point
Best Used for:
  • Recoil absorption
Would recommend: Yes
Was it helpful to you? Yes | No

A dang good buffer spring to buy!

by Noah Couch, Verified Owner from OR, United States Written on December 25, 2025
This piece is amazing, truly a dang thing of glorious genius. Not only has it dampened the sound when the rifle cycles, but it has brought the recoil of the weapon down pretty decently. A recommend for any and all new to the AR-15 platform of rifles.
Pros:
  • Less recoil
  • Sound Dampens
Cons:
  • None
Best Used for:
  • shooting
Would recommend: Yes
Was it helpful to you? Yes | No
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