Can be used with our PCC hydraulic buffers, and in certain cases, our AR hydraulic buffers to add mass in front of the buffer.

The Spacer Weight also adds .75" in length to the buffer system, and adds 2.5 ounces of weight, which is designed for a close fit buffer tube while preventing tilting of the buffer during cycling.

The weight has several functions: the additional mass further delays initial bolt movement and slows the bolt velocity, it helps to keep the buffer aligned in the buffer tube, and its additional length can be used to make a short stroke system if desired.