The Freedom Ordnance FM-9D is a belt fed, semi-automatic, 9MM pistol packed with the features and quality you expect from Freedom Ordnance. Featuring a patent pending one handed bolt charging/ hold open assist device, last round bolt hold open technology with Glock type magazine and patent pending belt bag/ belt feed device attachment technology with magazine feed assist. The FM-9D feeds most 9x19 FMJ and hollow point ammunition from 115 to 147gr weights and its critical components are made from heat treated 4140 chromoly and s7 tool steels with nitride & hard chrome finishes. FeaturesBCM Rail Mounting SystemPatent Pending Split Bolt Delay SystemLast Round Bolt Hold Open Technology with Glock Type MagazinesCritical Components are Heat Treated 4140 Chromoly & S7 Steel