Details
Replacement upgrade 30 round spring for use in AR magazines including Pmags, Hexmags and standard USGI magazines. Use along with our 10 round blocks for an upgrade or save your original springs. Uses the highest quality 17-7 Stainless spring steel which has the best properties for magazine spring use. Most companies don't use this quality steel due to the added cost, but if you want the best it will cost more. These 30rd AR15 magazine spring holds up in the harshest condition and won't loose tension over time even if maintained fully loaded. We guarantee spring will not be damaged from long term storage of fully loaded magazines!
These springs use 17-7 PH is a precipitation-hardened stainless steel that is well suited for aerospace and other applications requiring high strength and good corrosion resistance and formability. Type 17-7PH is a Chromium-Nickel-Aluminum, austenitic stainless steel. It is the most formable of all PH grades and has the highest strength and hardness. It is less magnetic than other PH grades and offers minimal distortion upon heat treatment. This material maintains its valuable properties at temperatures up to 800° F.
Additional Information
| Custom design | No |
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