New Protek Softair Bolt Release CNC MP7 GBBR MARUI ProteK €60.00 The Bolt Release is machined from 304 stainless steel to increase the reliability of your MP7 Tokyo MARUI GBBR. This part will last a lifetime! The dimensions of the part have been specifically made by ProteK to allow a guaranteed firing stop compared to the original part. Part replacing reference MGG1-73 Add to cart