DEMO Volquartsen Firearms Ruger Mark IV Accurizing Kit Flat Black. It also comes with pretravel and overtravel adjustments and includes medium strength Loctite to secure the adjustment screws. The Accurizing Kit for the Ruger MK IV will provide a crisp clean light trigger pull. This kit will eliminate the magazine disconnect. Specifications for Volquartsen Firearms Ruger Mark IV Accurizing Kit: Manufacturer: Volquartsen Firearms Fabric/Material: A2 Tool Steel Gun Model: Ruger Mark IV Gun Type: Pistol Trigger Pull Weight: 1.75 lb Trigger Shape: Flat Trigger Installation Type: Drop-In Gun Make: Volquartsen Firearms Model Generation: 4 Features of Volquartsen Firearms Ruger Mark IV Accurizing Kit: This kit fits all variations of the Ruger MK IV (including 22/45 and 22/45 Lite). It is designed for Ruger frames and we cannot guarantee compatibility with aftermarket frames. Flat trigger is not compatible with MKII pistols. Package Contents: Volquartsen Firearms Ruger Mark IV Accurizing Kit Volquartsen Firearms VC4AK-0004: Ruger Mark IV Accurizing Kit Flat Black