Phoenix Technology Field Series Tactical Stock Saiga Black. Pistol Grip Adjustable stock allows for (5) length of pull options for quick and easy customization for best fit and comfort and weapon control. Recoil Absorbing Butt Pad absorbs some of the recoil reducing the 'punch' felt by shotgun loads. Specifications for Phoenix Technology Field Series Tactical Stock: Manufacturer: Phoenix Technology Gun Type: Shotgun Included Accessories: Shotshell Carrier Stock/Brace Material: Glass Fiber Reinforced Nylon Condition: New Features of Phoenix Technology Field Series Tactical Stock: FITS: 12 GA 6 position Pistol Grip Tactical Stock LOP adjustments 10.5 in Package Contents: Phoenix Technology Field Series Tactical Stock 20 GA. Shot Shell Carrier Included - Direct Mount to stock Installation hardware Lifetime Warranty. What firearm models does the manufacturer say Phoenix Technology Field Series Tactical Stock is compatible with? The manufacturer says that Phoenix Technology Field Series Tactical Stock is compatible with Winchester Model 1200 Mossberg Model 500 Mossberg Maverick 88 Saiga Saiga 12 Gauge Saiga 20 Gauge Mossberg Model 500 20 Gauge Remington Model 870 20 GaugePhoenix Technology FST04B: Field Series Tactical Stock Saiga Black