USED Boyds Hardwood Gunstocks FT Left Hand Ruger American Centerfire Predator Short Action Detachable Box Mag FBC Nutmeg. The manufacturer suggests that Boyds Hardwood Gunstocks Rifle Stock FT LH Ruger American Centerfire Predator Short Action Detachable Box Mag FBC is compatible with Ruger American Rifle PredatorBoyds Hardwood Gunstocks 3ZB144D07111: FT LH Ruger American Centerfire Predator Short Action Detachable Box Mag FBC Nutmeg