Volquartsen 10/22 Accuracy Stabilization Module The Volquartsen 10/22 Stabilization Module enhances accuracy by aligning the exiting barrel gas to surround and stabilize the bullet. Tuning muzzle gases for accuracy is no joke (our OPS Brakes for Centerfire will attest to that). These Volquartsen 10/22 Stabilization Modules attach to the muzzle of any .920" diameter target barrel. The precision machined from lightweight aluminum and won't change the balance or feel of your rifle. But they just might be what you're looking for to enhance your accuracy potential. Be sure to visit our Volquartsen Home Page.