Blueguns FN Herstal SCAR 16S Training Guns Not Weighted No Light/Laser Attachment Handgun Blue. This results in the lever being able to lock back in only the safest possible way but also allows the shooter to try to clear an empty chamber. The Backstrap (tightening loop) allows the shooter to manipulate the bolt of the FN Long Gun using normal techniques. The Backstrap (loose) allows the shooter to manipulate the bolt of the FN SCAR 16S (Fixed) after being seated through his/her backstrap has been moved to the rear. The bayonet lug of the FN Long Gun is made of a special alloy that enhances the structural strength and rigidity of the Long Gun. Specifications for Blueguns FN Training Long Gun: Manufacturer: Blueguns Color: Blue Gun Make: FN Herstal Gun Model: FN SCAR 16S Gun Type: Handgun Weighted: Not Weighted Package Contents: Blueguns FN Training Long Gun What firearm models does the manufacturer say Blueguns FN Training Long Gun is compatible with? The manufacturer suggests that Blueguns FN Training Long Gun is compatible with FN SCAR 16SBlueguns FSFNSCAR16S: FN SCAR16S Training Long Gun Blue