![]() ![]() ![]() Q: Well then - for a 16 inch barrel, why would someone chose one type of gas vs the other?Ī: If you are the type of person who prefers mid-length gas on a 5.56mm because it has less gas port erosion and less stress on the bolt and extractor, then choose carbine gas. For barrels 16 inches or longer, carbine or pistol gas will work. For barrels under 16 inches, pistol is needed - the bore is larger than 5.56mm so the gas pressure drops off faster. Q: Should I look for an AR upper with carbine or pistol gas?Ī: First, there is no barrel length which works with mid-length or rifle gas. Lighter than full auto carrier.ġ6" Carbine gas system with. I wondered how much might just be "break-in"? Anyway, I'm going to try cutting a couple coils off the spring and get a couple of the springs mentioned coming for backup and/or future builds. I was thinking about an adjustable gas block, but again, going bigger than. Also concerned with creating a burr on the inside, but I suppose one round would take care of that. 125 I don't want to make them any bigger since that is supposedly the max inside diameter of the gas tube. ![]() Do you know what to call and where to find the tool to gauge the hole? Assuming the holes are all a uniform. I would like to gauge the holes to confirm. They say on their website this barrel has a 0.125 gas hole. Only one of the guns will cycle and only with the 110 supersonic. I'm pretty darn confident in my alignment, but how would I confirm? Shooting good Hornady ammo of 3 different weights and Sig subsonic. This is the reason why planes traveling faster than the speed of sound create sonic booms.Too late to try pistol length gas. They cannot go faster than the speed of sound. So if you put a speaker at the front of the 1,000 mph train, the sound waves will not depart the train at 1,700 mph. The waves propogate through the air at that fixed speed, and they can go no faster. If you turn on the stereo in your living room, sound waves "shoot out" of the speaker at the speed of sound - something like 700 mph. What's true for bullets, however, is not true of some other things that you might "shoot" from the front of the train. Relative to the ground, the bullet will not be moving at all, and it will drop straight to the ground. ![]() If you shoot the bullet off the back of the train, the bullet will still be moving away from you and the gun at 1,000 mph, but now the speed of the train will subtract from the speed of the bullet. So if the bullet hits something on the ground, it will hit it going 2,000 mph. But, relative to the ground, the bullet will travel at 2,000 mph, the speed of the bullet plus the speed of the train. If you go to the front of a train that is moving at 1,000 mph and shoot the gun forward, the bullet will move away from you and the train at 1,000 mph, just as it would if the train were stopped. So what does this mean for our gun? If the gun shoots bullets at 1,000 mph, then the bullet will always move away from the gun at 1,000 mph. So the ball behaves exactly as it would if you were standing on the ground and not moving. Since you and the ball are already moving at the same speed as the train, the only forces acting on the ball are your hand and gravity. If you throw a ball straight up in the air, it will come straight back down whether the train is sitting still or going 1,000 mph. You would have no way of knowing how fast you are going (or if you were moving at all). Imagine you are on a perfectly smooth speeding train, moving at a uniform speed (not accelerating or turning), in a car with no windows. We could rephrase this a little and say that a body in motion tends to stay in motion and a body at rest tends to stay at rest unless acted on by an external force. "Every body persists in its state of rest or of uniform motion in a straight line unless it is compelled to change that state by forces impressed on it." ![]()
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