Axcel AVX-31 External Spacer Black. The External Spacer can be utilized on both hunting and target set ups. Specifications for Axcel AVX-31 External Spacer: Manufacturer: Axcel Color: Black Hand: Ambidextrous Features of Axcel AVX-31 External Spacer: External Spacer designed for scopes with Ring Pin Should be used when shooting a lens without pins Package Contents: Axcel AVX-31 External Spacer Axcel AVX3-EXSP-BK: AVX-31 External Spacer Black