Hogue AR15 Freedom Fighter Fixed Magazine Compliance Kit Black. By upgrading your rifle with these AR15 Magazine Catches & Releases by Hogue you'll be able to successfully block the magazine release until the rear pin is removed and then the upper receiver is lifted upward and away from the lower receiver. Another fantastic feature of the AR-15/M-16 Freedom Fighter Fixed Magazine Conversion Kit is that the included Freedom Fighter jig can be reused many times. The Hogue Fixed Magazine Modification Kit is a high quality enhancement for your AR-15/M-16 platform rifle. While this device can be installed by skilled gun owners it is highly recommended that you consult a professional gunsmith to modify your firearm. Specifications for Hogue Fixed Magazine Solution Kit: Manufacturer: Hogue Gun Model: AR-15 Gun Type: Rifle Included Accessories: Drill Jig 2 Drill Bits 3 Spring with Pin Assemblies Condition: New Country of Origin: USA Package Contents: Hogue Fixed Magazine Solution Kit What firearm models does the manufacturer say Hogue Fixed Magazine Solution Kit is compatible with? The manufacturer says that Hogue Fixed Magazine Solution Kit is compatible with AR-15AR-15/M-16 Freedom Fighter Fixed Magazine Conversion Kit - Includes Drill Jig 2 Drills and 3 Spring with Pin Assemblies