Login
Start Free Trial Are you a business? Click Here

ISMI 1911 Mainspring (Hammer) 19 lb Reviews

4.8 Rating 38 Reviews
Read EGW Guns Reviews

Also available in 17lb or 22lb. These ISMI Springs are made from a stainless alloy 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. In independent testing, ISMI spring have endured in excess of 100,000 compression cycles. We don’t recommend going that long between changes however. With an ISMI spring, practice routine maintenance and change it once a year.
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 www.P65Warnings.ca.gov.

Visit Product Page

Location:

1121A Richland Commerce Dr,
QUAKERTOWN
Pennsylvania
18951

“I mean it’s a 19lb main spring, it does what it’s supposed too”
Helpful Report
Posted 1 month ago
Author didn't leave any comments.
Helpful Report
Posted 5 months ago
“Works excellent!”
1 Helpful Report
Posted 5 months ago
“No issues whatsoever”
1 Helpful Report
Posted 6 months ago
Author didn't leave any comments.
1 Helpful Report
Posted 7 months ago
“Great Product and fast shipping! Thank you!”
1 Helpful Report
Posted 8 months ago
“Once again another great product works very well would also buy again .”
1 Helpful Report
Posted 9 months ago
“Dropped into my mac 9 ds comp. feels ten times better than the stock one”
3 Helpful Report
Posted 9 months ago