SIG SAUER P211 Recoil Spring Set 8/10lb Black. Not compatible with the GT5 model. This set includes (1) 8lbs spring and (1) 10lbs spring as well as a recoil plug and recoil spring guide. Specifications for SIG SAUER P211 Recoil Spring Set: Manufacturer: SIG SAUER Color: Black Gun Make: SIG Sauer Gun Model: SIG Sauer P211-GTO Features of SIG SAUER Recoil Spring Set Fits Sig P211 Includes 8 Lbs and 10 Lbs Springs Black: Factory Replacement Part Package Contents: SIG SAUER P211 Recoil Spring Set What firearm models does the manufacturer say SIG SAUER P211 Recoil Spring Set is compatible with? The manufacturer suggests that SIG SAUER P211 Recoil Spring Set is compatible with SIG Sauer P211-GTOSIG SAUER 8902000: P211 Recoil Spring Set 8/10lb Black