TacStar AR Stock Adaptor for Remington 870 Shotgun Black. Unlike some competitive polymer adapters TacStars are made of a tough die cast metal alloy which not only provides greater strength but also additional weight to reduce felt recoil. Designed to perfectly match the factory receiver contours and mount up seamlessly. The adapters are designed for proper drop to use bead or ghost ring sights. The adapters will accept any standard AR-15 grip without a beavertail or one having a flexible rubber beavertail such as Pachmayrs Ergos and some Hogues. The adapter also features QD sling attachment ports on both sides. Available for Mossberg 500/590 and Remington 870 shotguns. (Does not include buffer tube or stock. Specifications for TacStar AR Stock Adapter for Remingtion 870 Shotgun: Manufacturer: TacStar Color: Black Gun Make: Remington Gun Model: Remington Model 870 Package Contents: TacStar AR Stock Adapter for Remingtion 870 Shotgun What firearm models does the manufacturer say TacStar AR Stock Adapter for Remingtion 870 Shotgun is compatible with? The manufacturer suggests that TacStar AR Stock Adapter for Remingtion 870 Shotgun is compatible with Remington Model 870TacStar 1081231: AR Stock Adaptor for Remington 870 Shotgun Black