JP Enterprises Tactical Spring Kit 4 Pounds With Trigger Kit. 0 Tactical Trigger Spring Kit. These kits from JP Enterprises allow you to replace the standard springs in JP Enterprises Fire Control parts to yield a 4.0 to 4.5 lb. trigger pull. The JP Enterprises Tactical Trigger Spring Assembly Kit includes replacement springs for the trigger hammer and disconnector. Use the JP Enterprises Tactical Trigger Spring Kit JPS4.0 to achieve smoother trigger control on your rifle. Specifications for JP Enterprises Tactical Trigger Spring Kit: Manufacturer: JP Enterprises Additional Features: with Trigger Kit Package Contents: JP Enterprises JPS4.0 Tactical Trigger Spring Replacement Kit Yellow trigger spring Grey hammer spring Disconnector spring JP Enterprises JPS4.0: Tactical Spring Kit (4 Pounds With Trigger Kit)