A Wilson Combat flatwire recoil spring (FWRS) with the FLGR & plug sized for the smaller ID flatwire recoil spring, has an average service life of up to 40,000 rounds, or up to ten times greater than conventional coil springs. Shooting +P ammunition with this setup is not a problem since flat wire springs don’t lose their length over time like round wire springs. There is evidence that the FWRS setup cushions the 1911 frame more effectively over time. Flat wire springs also tend to compress in a more linear fashion which makes them more tolerant of a wider variety of ammo loads and grip tecniques.
I can attest to all of this, I have a 13lb. FWRS with the full length guiderod & plug, in my STI Trojan 9mm 1911, the gun shoots every type of ammo I have tried beautifully. The gun locks back on empty for every magazine I have for it.
I can attest to all of this, I have a 13lb. FWRS with the full length guiderod & plug, in my STI Trojan 9mm 1911, the gun shoots every type of ammo I have tried beautifully. The gun locks back on empty for every magazine I have for it.