Presma AR-15 Forward Assist Assembly Steel Black. As pictured includes forward assist plunger forward assist spring and forward assist roll pin. Specifications for Presma AR-15 Forward Assist Assembly: Manufacturer: Presma Color: Black Fabric/Material: Stainless Steel Gun Model: AR-15 Finish: Anodized Gun Make: AR Platform Package Contents: Presma AR-15 Forward Assist Assembly Plunger Spring Roll pin What firearm models does the manufacturer say Presma AR-15 Forward Assist Assembly is compatible with? The manufacturer says that Presma AR-15 Forward Assist Assembly is compatible with AR-15Presma ARFA01: AR-15 Forward Assist Assembly Steel Black