Tiger Rock AR-15 Rifle Length Buffer Tube Assembly

Tiger Rock AR-15 Rifle Length Buffer Tube Assembly. Tiger Rock standard AR-15 length buffer tube assemblies include a bolt carrier with an oversized end cap to provide enough space for the castle nut and the lock rod end, along with the spring and bolt. The extra heavy-duty bolt catches on the end of the buffer tube to help secure it in the event that it is removed or spooked. These buffer tube assemblies are to be used with standard buffers and standard buffer springs, and may require slight tuning of the buffer and/or buffer spring weights for use with new or 'lightened' weight buffers and/or spring weights.