Products You May Like

2-pc Tungsten 6" Guide Rod 1911 $124.99
Carry Bevel Barrel Bushing SS - .701 OD Gunsmith Fit Angle Bore $22.50
Plunger Tube Bolt-on Blue w/ 4-40 Button Head Bolts $23.99 Click to view
Monogrammed Spring Plug - SS - "M" $10.00
EGW Ignition Kit w/ Lightened Hammer and 17# Main Spring $134.99
STI Hi-Cap Mag Well Silver $49.99 Click to view
Government Flat Wire Recoil Spring ISMI 20 lb
Click to enlarge

Government Flat Wire Recoil Spring ISMI 20 lb

Product #: 10663
Price: $8.99


In Stock
E-mail to a friend


ISMI Premium Flat Recoil Springs are used in EGW’s guide rod kit for Springfield and Officer’s model pistols.

Requires ¼” guide rod.

All ISMI Springs are made from silicone chrome instead of 150 year old music wire. Every ISMI spring is heat treated, shot peened & stress relieved to enhance durability, consistency and reliability.

ISMI is a contractor of the U.S. government and produces springs used in machine guns with incredibly high cycling rates. Also, the creator of ISMI springs obtained his knowledge from extensive research in the development of springs used in Indy car racing.

Warning: This product may be alloyed with trace amounts of lead and other elements which are known to the State of California to cause reproductive harm and cancer. To prevent exposure, do not alter the product by welding, grinding, etc. For more information, go to

Product Reviews

Login or Register to write a review.
Reviewed by bought "Government Flat Wire Recoil Spring ISMI 20 lb" on our website
04/04/2015 - 03:26:13 PM
This made all the difference in my Springfield Armory 1911 Operator model and even though my Sig Sauer 1911 Scorpion came with the 18lb version I replaced that with EGW's 20lb. This recoil spring SIGNIFICANTLY reduces recoil, I was amazed at muzzle flip control, felt recoil, and reduced time to acquire the same sight picture. I can't say enough great things this recoil spring, thank you EGW for a quality part that works perfectly.