ODIN Works AR-15 H-FRTB Forced Reset Trigger Heavy Buffer Stainless. It offers a simplified performance-driven approach to firearm tuning delivering consistent cycling and recoil control without the need for adjustment. Designed to run smoothly on a variety of setups this buffer achieves increased weight and pairs with a proprietary flat wire spring for reliable operation. Helps manage recoil impulse reduce wear on moving components and and aid in reliable cycling with an FRT in AR-15 platforms. Specifications for ODIN Works AR-15 H-FRB Forced Reset Trigger Heavy Buffer: Manufacturer: ODIN Works Color: Stainless Fabric/Material: 303 Stainless Steel Gun Make: AR Platform Gun Model: AR-15 Length: 3.25 Weight: 6.2 oz Features of ODIN Works AR-15 H-FRB Forced Reset Trigger Heavy Buffer: Aids in reliable function with an Forced Reset Trigger or a high rate of fire Reduces wear on moving parts Compatible with standard AR-15 platforms Designed for Carbine-length buffer tubes Must be used with provided proprietary spring Package Contents: ODIN Works AR-15 H-FRB Forced Reset Trigger Heavy Buffer Proprietary Flatwire Spring What firearm models does the manufacturer say ODIN Works AR-15 H-FRB Forced Reset Trigger Heavy Buffer is compatible with? The manufacturer suggests that ODIN Works AR-15 H-FRB Forced Reset Trigger Heavy Buffer is compatible with AR-15ODIN Works OS-BS-HFRB-AR15: AR-15 H-FRB Forced Reset Trigger Heavy Buffer Stainless