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Geissele Automatics
Overview
The Geissele Automatics Super 42 Rifle Length Spring is designed to enhance the recoil management and reliability of your AR-15 platform. With its rifle-length configuration, this spring is engineered to work seamlessly with rifle-length buffer tubes, optimizing the cycling of your action and ensuring smoother operation. This buffer spring is commonly found in builds utilizing a mid-length gas system chambered in 5.56 NATO, making it a solid choice for those looking to improve both performance and shootability in their rifles.
Geissele Automatics Super 42 Rifle Length Spring was the fifth most added buffer spring on GunPartPicker in August 2026, behind the Aero Precision AR-15 Rifle Buffer Spring, with about 7% of all buffer springs added to builds. That's its 3rd straight month at #5. Builds with this buffer spring are mostly chambered in 5.56 NATO (73%, then .224 Valkyrie 9%), split between mid-length (50%) and carbine-length (30%) gas systems, and mostly AR-15 (79%, then AR-10 21%).
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 4 of the 6 retailers we track have it in stock. It dipped to $26.05 at Brownells for a stretch in August 2026, well under its usual $33 to $34, so sales do come around. Buying today, the lowest price is $34 at Brownells, above August's low of $26.05, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
We ranked every buffer spring by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Buffer Spring Guide →The part most often added in each category by the 201 builds that include this one
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Geissele Automatics Super 42 Rifle Length Spring
| Build | Parts | Total |
|---|---|---|
 | 30 | $6230.88 |
 | 24 | $3254.17 |
 | 21 | $3095.67 |
 | 30 | $5059.51 |
 | 22 | $1693.17 |
 | 25 | $2221.31 |
 | 25 | $2221.31 |
 | 29 | $3761.81 |
 | 23 | $1551.88 |
 | 21 | $5175.90 |
 | 13 | $1087.41 |
 | 20 | $3654.44 |
1 global rating
Top reviews
super 42 rifle length spring is geissele top tier, braided wire keeps it quiet through the cycle. one nit, the finish on mine has a slight blue tint vs the black i was expecting, only visible against another super 42 in direct light. functions correctly
