Sig Sauer P320 Weighted Baseplates made 6061 Aluminum and 7 series hard-coat. Designed to fit both circle peg spring followers and well as the 21-round rectangle peg spring followers. *Note: Rectangular peg spring followers may need slight modification of spring follower. Removal of 2mm plastic from the front of the spring follower may be needed.
NOTE: For 9mm / 40cal / 357 SIG ONLY