Aftec Extractors End Extractor Malfunctions. Extractor tension is achieved by two springs that push on side of extractor. Regular extractors are bent to achieve tension. They straighten out over time and cause malfunctions. No slide modifications are necessary. Complete instructions and extra springs included. Used by World Champ Todd Jarrett. Fits 1911, Springfield, STI, SV, and all Kimbers without extrernal extractors. Will not work in Series 80 Colts or Para Ordnance. May require fitting.