The Rapid Attach Buttstock Adapter Mini allows you to greatly reduce the length of your firearm for compact storage and easy transportation without any modifications. It allows for the attachment and removal of your buttstock or pistol brace in seconds. How to use: To detach, pull the bottom release tab and twist counter-clockwise 30 degrees. The stock will then be separated from the firearm. To re-attach, align the two pieces, push in and turn clockwise 30 degrees. The steel locking mechanism automatically secures the adapter. It's7075 aluminum construction and steel internals make the RAB-AD Mini both robust and lightweight. The RAB-AD Mini's designed for firearms utilizing AR style buffer tube stocks that do not require retention of a buffer weight and spring. NOTE: The RAB-AD Mini is compatible with RAB-AD Pic Rail to adapt buffer tube style stock to railed receiver. It is not compatible with standard AR15 rifles as it cannot retain the buffer weight and spring.