ISMI

ISMI premium springs are manufactured exclusively with certified aerospace specification alloys; stainless or chrome silicon. Then the springs are heat treated, shot peened and stress relieved after winding to enhance performance and durability. ISMI springs utilize the same design and manufacturing technology as used in IndyCar and Formula One racing.




ISMI Chrome Silicon 1911 Firing Pin Spring

ISMI Chrome Silicon 1911 Firing Pin Spring

ISMI Chrome Silicon 1911 Firing Pin Spring Upgrade or replace worn-out springs for more dependab..

$8.00

ISMI Glock Flat Recoil Spring 11lb

ISMI Glock Flat Recoil Spring 11lb

ISMI Glock Flat Recoil Spring 11lb Compatible with Gen3 and Gen4/5 models (with adapter ring)Easy i..

$15.00

ISMI Glock Flat Recoil Spring 13lb

ISMI Glock Flat Recoil Spring 13lb

ISMI Glock Flat Recoil Spring 13lb Compatible with Gen3 and Gen4/5 models (with adapter ring)Easy i..

$15.00

ISMI Mag Catch Spring

ISMI Mag Catch Spring

ISMI Stainless Alloy 1911 Magazine Catcgh Spring  ..

$5.00

ISMI Main Spring 15lb

ISMI Main Spring 15lb

ISMI Main Spring 15lb CAD designed and built to Aerospace specifications from chrome silicon, co..

$8.00

ISMI Main Spring 17lb

ISMI Main Spring 17lb

ISMI premium springs are manufactured exclusively with certified aerospace spec alloys; stainless al..

$8.00

ISMI Main Spring 19lb

ISMI Main Spring 19lb

ISMI Main Spring 19lb CAD designed and built to Aerospace specifications from chrome silicon, co..

$8.00

ISMI Recoil Spring 10lb 1911/2011

ISMI Recoil Spring 10lb 1911/2011

The highest quality recoil springs from ISMI in 10lbs. Will work with our 1911 spring guide rods to ..

$15.00

ISMI Recoil Spring 12.5lb 1911/2011

ISMI Recoil Spring 12.5lb 1911/2011

The highest quality recoil springs from ISMI in 12.5lbs. Will work with our 1911 spring guide rods t..

$15.00

Springer Precision ISMI Glock 17/22 Stainless Steel Guide Rod (Non-Captive)

Springer Precision ISMI Glock 17/22 Stainless Steel Guide Rod (Non-Captive)

For Use With Glock 17 & 22 - NON-CAPTIVE SPRINGSFor Gen 3 Models, or Gen 4 With Use of Reducing ..

$39.87

Springer Precision ISMI P320/X-5 Recoil Spring #12

Springer Precision ISMI P320/X-5 Recoil Spring #12

Springer Precision ISMI P320/X-5 Recoil Spring #12Made by ISMI to be extra long and securely lock yo..

$13.95

Springer Precision ISMI P320/X-5 Recoil Spring #13

Springer Precision ISMI P320/X-5 Recoil Spring #13

Springer Precision ISMI P320/X-5 Recoil Spring #13Made by ISMI to be extra long and securely lock yo..

$13.95

Springer Precision ISMI P320/X-5 Recoil Spring #14

Springer Precision ISMI P320/X-5 Recoil Spring #14

Springer Precision ISMI P320/X-5 Recoil Spring #14Made by ISMI to be extra long and securely lock yo..

$13.95

Springer Precision ISMI P320/X-5 Recoil Spring #16

Springer Precision ISMI P320/X-5 Recoil Spring #16

Springer Precision ISMI P320/X-5 Recoil Spring #16Made by ISMI to be extra long and securely lock yo..

$13.95

Springer Precision ISMI P320/X-5 Recoil Spring Tuning Kit

Springer Precision ISMI P320/X-5 Recoil Spring Tuning Kit

Springer Precision ISMI P320/X-5 Recoil Spring Tuning KitMade by ISMI to be extra long and securely ..

$37.66

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