As the Chamber Arm is raised and lowered, the Nub will pass through a cut out in the inner barrel known as the barrel window.Ĥ. The Nub sits in a place holder on the Chamber Arm.ģ. Turning the Wheel Gears on the Hop-up Unit raises and lowers the Hop-up Chamber Arm.Ģ. It does work well in most, but not all standard Bucking/Nub set-upsġ. The function of this mod is to essentially provide more resistance and better control as the BB pushes the Bucking mound down as it passes over it. Some use wire insulation, fishing line, foam, wire nails cut down to size, etc. Using various materials to fill in the open center of a Nub. This is always true unless doing advanced modding that may not require the Nub. The idea is that when the BB passes over the V-teeth, the V-teeth will cup the BB and give the BB greater stability.įireFly V-shaped Buckings and KWA 2g Buckings are examples of this design.īuckings need Nubs to apply pressure to the Bucking. I say semi replaced because in some V-teeth designs, the V-teeth actually stand on top of a shortened Bucking mound. V teeth are another approach/design of a Bucking mound where the mound is actually semi-replaced by twin fins of rubber. Your Hop-up Unit adjustment wheel allows you to apply more pressure to the Bucking mound via the Nub and create more or less spin/hop as desired. This adds spin/hop to the bb and thus controlled flight in air. When the BB passes over the Bucking mound, it presses into it as if it is flattening the mound. This hump is located on the Bucking directly over the barrel window of the inner barrel. Most Buckings come in soft, medium, and hard degrees.Ī standard Bucking has what is known as a mound.Ī mound is a hump in the inside of the bucking that the BB passes over when shot.
There are also after-market drop-in Buckings that you can buy that are usually better quality than the stock Bucking.īetter quality Buckings can increase range and accuracy with your gun.
Provide air seal via the Bucking Lips with the Air Nozzle.ĭrop-in Buckings are standard Buckings that come stock with airsoft guns. Provide Hop by the rubber of the Bucking contacting the BB.ģ. Hold the Hop-up unit secure to the inner barrel.Ģ. G-hop, Flat-hop and R-hop are Hop up mods.ġ.