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Geissele Super 42 Braided Wire Buffer Spring and Buffer Combo Up to 12% Off w/ Free Shipping — 2 models
Yes, the Geissele Super 42 Braided Wire Buffer Spring and Buffer Combo will be compatible with your Aero Precision M5 as long as you are using a carbine length buffer tube. I would recommend the H2 buffer.
The Geissele Super 42 Braided Wire Buffer Spring and Buffer Combo H2 and H3 model will work for all of those rifles. However, I recommend going with the H3 model if you will be switching between suppressed and unsuppressed.
I put this on my BCM pistol lower that had a 12.5 old school Bushmaster h-bar upper. Had a standard H1 with milspec sping. It removed all jumping and bouncing with this new super 42 H2 buffer system. Stays right on target with follow up shots. Very i...
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2/2 found this helpful
Helpful Positive Review
Great Combo
by
Super 42,
Verified Owner,
October 5, 2025
Upgraded to Super Spring/H3 combo to gi with my new trigger upgrade... works great. Really like the quality if the parts. Shipping was quick and easy like always.
Geissele super 42 kit reduced the bolt bounce challenge i was having with rapid fire rates.. thanks optics planet and Geissele for such a great deal on a great product!
Received the product in short time - great condition and works as advertised and reviewed by others . Made my psa ar feel more enjoyable quieter and softer recoil
Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.
Product Info for Geissele Super 42 Braided Wire Buffer Spring and Buffer Combo
The Geissele Super 42 Braided Wire Buffer Spring and Buffer Combo was designed to improve the function and reliability of your AR-15 pattern rifle. The unique spring design of these AR15 Buffer Springs uses three independent strands of wire, just like the German MG42 Machine Gun. This concept 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 AR-15 more reliable.
Compared to the stock spring, the Geissele Super 42 Braided Wire Buffer Spring and Buffer Combo has a decreased tendency to lose length and force over a given round count. As an added bonus, it removes the annoying spring reverberations (twang) heard and felt by the shooter through the buttstock. The Super 42 Braided Wire Buffer Spring and Buffer Combo has a 15% stronger average return force than the standard buffer spring. This will assist in stripping rounds out of the magazine when operating with a dirty weapon or when using steel-case ammo.
NOTE: The Super 42 is for use with Carbine length buffer tubes and is not compatible with rifle length or A5 buffer tubes/receiver extensions.
We do not recommend the Super 42 with 300 Blackout subsonic ammunition. The Super 42 Spring may be too powerful and not allow the rifle to function properly.