Kolya from United States, PA Public Profile

Like most SI products I have encountered, they take what is usually a mundane build part and turn it into a functional piece of engineering art. In addition to aestetics, functional upgrades to a standard buffer tube include weight reduction, 7-positions, and buffer retention pin tabs.

One issue came up with only when used with the MFT Battlelink Stock. The problem was due to the exterior of this tube having sculpted edges that save weight and look "really cool". This causes the MFT Battlelink stock to have excessive play due to it's oval "eye" opening shape and the tube's sculpted edges creating a large gap on both sides. This issue was not present in the three other stocks I tried (Standard Mil-Spec, Magpul MOE, Magpul CTR) which all had a round opening shape. The MFT Battlelink Stock is definitly a 5-Star product, and the SI Advanced Receiver Tube is a 5-Star product, just not combined together.