New high quality stainless steel +10% spring tension 30rd AR15 magazine springs. Holds up in harsh conditions. We guarantee spring will not be damaged from long term storage of fully loaded magazine.
Guaranteed to work great in:
Aluminum USGI AR15 Magazines
Magpul PMAG
Lancer L5
CProducts stainless steel (including 6.5 & 6.8)
Any other magazine using standard 30rd AR15 spring.
Can be cut down to work in lower capacity magazines.
Satisfaction guaranteed or money back.