HK MP5/K & SP5/K Bolt Hold Open

MP5 40/10 Threaded Bolt Catch For Magazine Follower This is the small threaded screw that fits into the bolt-hold-open axle and makes contact with the magazine follower to activate the bolt-hold-open. A small but critical part is to keep spares on hand,...

MP5 40,10 Bolt Hold Open Weldment Set CompleteNot offered or available anywhere else. This is the correct weldment set for the MP5 40/10 BHO components. 

MP5 40/10 Bolt Hold Open Set Complete - UsedComplete German bolt hold open set that includes: German Axel Rod Axel Roll Pin Lever Torsion Spring 

MP5 40, 10 Bolt Hold Torsion Spring This is the factory spring used to activate the bolt hold-open lever. Great spare and needed part to have on hand.

MP5 40, MP5 10 Bolt Hold Open Lever - German HK - New  A great upgrade for the out-of-spec and sub-par quality part found on clone builds. Compatible with: MP5 40 MP5 10mm MP5 .357 Sig MP5 9 X 25 Dillon

HK MP5 40, MP5 10 Bolt Hold Open Axle Rod & Pin Combo Each bolt hold open rod axle includes the 2 pre-drilled holes for the threaded activation screw and the clamping sleeve. This offering includes both the axle rod and the threaded screw for the...

H&K MP5 40/10 Bolt Hold Open Axle Roll Pin  

H&K MP5 40/10 Bolt Hold Open Axle Rod This is the German HK MP5 40/10 bold hold open axle rod. Each unit has the 2 pre-drilled holes for activation screw and clamping sleeve. German HK manufacture. Compatible with: MP5 40 MP5 10 MP5 .357 Please...