Chrome Silicon Wire For Superior Performance & Durability
Wound with high tensile, chrome silicon wire that’s shot peened, heat treated, then stress-relieved for the longest service life possible, without cracking or failure. Fits Glock 19, 21, 23 and 32, Law Enforcement, high capacity magazines. 10% Extra power.
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Big Book Catalog, Issue:70, Page:224
SPECS: Chrome silicon steel wire.