ISMI premium springs are manufactured exclusively with certified aerospace spec alloys; stainless alloy and chrome silicon. Each spring has been heat treated, stress relieved and shot peened to enhance performance and durability. These extra steps and quality materials ensure consistency and longevity many time that of standard music wire springs. All springs carry a 12 month manufacturer replacement warranty.
(2)
Average rating 10 out of 10
( based on 2
reviews )

Mag springs
Good quality. Works well.
Great springs, great service
Ordered 3 springs cannibalize 3 followers and locking plates to make MEC GAR bodies work. Fired 150 rounds today hp and swc 100 %. Need to sell followers and locking plates. Great springs.