MR918/MR920 Recoil Spring (fits all Shadow SS Guide Rods)


MR918/MR920 Recoil Spring (fits all Shadow SS Guide Rods)


SKU: SG9C-00-04C Category:


This spring is designed to fit the MR918, MR920, and our Gen1-3 and Gen4-5 stainless steel guide rods.

Shadow Springs are formed from high-quality chrome silicon material.  There is some debate on this point, but we do feel that chrome silicon springs are simply a higher quality, longer wearing spring, ESPECIALLY in high heat from extended firing.  We typically recommend changing springs at around 5,000 rounds, but we have run these springs for as many as 10,000 rounds.

Chrome silicon recoil spring

Fits Shadow Systems stainless steel rods

Premium chrome silicon spring in your choice of standard factory weight 18 lbs.(similar to G19 weight), lightweight 15 lbs., or heavy 20 lbs.


Disclaimer: “GLOCK” is a federally registered trademark of GLOCK, Inc and is one of many trademarks owned by GLOCK, Inc. or GLOCK Ges.m.b.H. Neither Shadow Systems LLC, nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of “GLOCK” on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For genuine GLOCK, Inc and GLOCK Ges.m.b.H. products and parts visit

Restrictions: By buying this item from Shadow Systems, the Customer certifies that the Customer will comply with any and all requirements imposed by applicable U.S. federal, state, and local laws, regulations, and administrative policies.


Additional information

Spring Weight

15 lbs (lightweight), 18 lbs (factory weight), 20lbs (heavy weight)


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