Adaptive Technologies Detachable Magazine Conversion Kit for Howa® 1500/Weatherby Vanguard Long Action w/ 5 Round 300 Win Mag Magazine


This conversion kit for the Howa 1500 is a drop in conversion that replaces the OEM trigger guard.  It converts the rifle from the fixed magazine of the OEM configuration into one that can take 5 or 10 round detachable magazines.  This conversion is compatible with any rifle that uses the Howa 1500 action and trigger guard, including the Weatherby Vanguard, Mossberg 1500 and Smith & Wesson 1500 rifles.  This kit comes complete with (1) 5 Round 300 Win Mag magazine.


  • Easy Installation
  • Tough, Polymer Construction


Trigger Guard:

Attaching Interface Howa 1500 Long Action Trigger Guard Compatiblity Howa 1500, Weatherby Vanguard, Mossberg 1500, S&W 1500 Long Action
Magazine Interface Single Stack Single Feed Detachable Box Polymer Proturding Magazine Compatiblity Adaptive Technologies Howa 1500 Long Action Trigger Guard Conversion
Magazine Capacity 5 Round (Supplied); 10 Round (Sold Seperately) Trigger Guard Type Part of Magwell Assembly
Trigger Guard Material Polymer Trigger Guard Finish Black
Trigger Guard Engraving None Magazine Release Type Pull Lever
Magaine Release Position Part of Front Trigger Guard, Ahead of Magazine, Near Flush Anti-Release Magazine Lock Mechanism None


Interface Adaptive Technologies Howa 1500 Long Action Detachable Magazine Conversion Compatibility Howa 1500, Weatherby Vanguard, Mossberg 1500, S&W 1500
Type Detachable Single Stack Box Feed Style Single Feed
Caliber 300 Win Mag Capacity 5
Fit Type Protruding Body Material Polymer
Body Colour Black Feed Lip Material Polymer
Feed Lip Colour Black Follower Material Polymer
Follower Colour Black Floorplate Material Polymer
Floorplate Colour Black Length (in; cm) ~3.9; 10
Width (in; cm) ~1.2; 3 Height (in; cm) ~3.8; 9.5
Weight (lbs; kg) ~0.2; 0.1

Additional Information:

Note: Fitting of the trigger guard may be required depending on the rifle’s stock.  Consulting a gunsmith is recommended in this scenario.

Note (2):  This conversion replaces the OEM trigger guard of the rifle.  It is not compatible with rifles that have stocks or chassis that do not use the OEM trigger guard.

Item Number ATIK5R300


Manufacturers, importers, suppliers, and distributors may make changes to their products without fanfare. Such changes can lead to discrepancies between the advertised product and the actual product in inventory. While International Shooting Supplies Ltd. endeavors to correctly describe the actual product in inventory, we will not be responsible for unintentional inaccuracies in text and images of the advertised product.


Adaptive Technologies


300 Win Mag

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