The Nordic Components Shotgun Modular Telescopic Magazine Extension is great for the Snow Goose hunter who needs 9 rounds, to the 3 Gun competitor looking for an extension that doesn't get damaged during competition. When collapsed, this extension is equal in length to a standard Nordic +5 extension tube, therefore it will fit easily in a gun case without having to disassemble. Telescopic Shotgun Magazine Extension with a black anodized finish. Extension will come with user specific shotgun adapter attached. IncludedModular Extension with shotgun adapter Low Drag Follower Magazine Spring