The L7 is the latest in Ion bolt technology. It takes speed, accuracy and reduced kick to the highest level in paintball. It literally makes your marker shoot smoother than other markers. This includes markers that cost 5 times more than the Ion. Due to the way that the Ion operates, reducing the weight of the bolt allows for the lowest possible dwell settings and the highest rates of fire. It's commonly known in paintball that the larger you make the firing chamber the more you can lower your gun's operating pressure. The L7 Bolt takes both of these ideas to the EXTREME!!! Because of TechT's patent pending "back plug" design, the L7 has the largest firing chamber of any Ion bolt. This means it runs at the lowest pressures possible. The new plug is a stationary part that is designed to seal and maximize the size of the firing chamber. The front o-ring seals the firing chamber, and the back one is used to hold it in place. This bolt has tested to be the fastest and most accurate (consistent) bolt TechT has ever shot. It is compatible with all firing chambers and after market bodies. The L7 Bolt System will now work with any: Ion, Ion XE, Epiphany, EOS, Vibe, SP-1 and SP-8, just be sure to order the one that is made for the gun you have.