Axcel LANDSLYDE AVX-41 Scope Kit for Lens Black. The kit includes a lens retainer and spacer which are to be placed on either ide of the lens within the housing. Specifications for Axcel LANDSLYDE AVX-41 Scope Kit for Lens: Manufacturer: Axcel Color: Black Features of Axcel LANDSLYDE AVX-41 Scope Kit for Lens: Includes lens retainer and lens spacer For LANDSLYDE AVX-41 sights and housings Package Contents: Axcel LANDSLYDE AVX-41 Scope Kit for Lens Axcel ALND-LKT-4BK: LANDSLYDE AVX-41 Scope Kit for Lens Black