10% Extra Power For Reliable Feeding
Don't mess with worn out or questionable surplus springs. Premium grade, tempered, magazine springs newly manufactured from the finest spring steel to the original military specifications. 10% extra power assures reliable feeding with all calibers and conversions. Minor fitting may be required.
Big Book Catalog, Issue:68, Page:189
New Product Supplement, Issue:494, Page:000
SPECS: Spring steel, tempered, blue. Sold individually.