ar15

AR15 Buffer Weights: Tungsten vs Steel Standard-weight carbine buffers have 3 steel weights inside them. This mass helps counteract the rearward motion of the bolt carrier group as the firearm cycles. However, there are situations where some or all of those steel weights are swapped out in favor of heavier tungsten weights. Switching to a heavier buffer is the easiest way to solve an “overgassed AR15”. These heavier buffers are named H1, H2 and H3 to denote how many tungsten weights they have. AR15 Ejection Pattern The pattern in which spent cartridges eject from the firearm can tell you a lot about what’s going on inside the gun. The velocity at which the bolt carrier group (BCG) cycles back to […]

Overgassed AR15 An overgassed AR15 is when the gun cycles too fast due to an imbalance of too much gas pressure acting on the mass of the bolt carrier group, buffer weights and the tension of the buffer spring. Gas operated firearms like the AR15 redirect some of the high pressure gases released by firing the gun to cycle the bolt in order to automatically remove the spent cartridge and load a new cartridge. If too much of that gas is redirected to cycle the action, then the firearm is said to be overgassed. Symptoms of an Overgassed AR15 The most obvious sign of an overgassed AR is that the firearm will fail to properly cycle, aka jam. You may […]