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Posted: 8/4/2014 5:12:26 PM EDT
| what are the tell tale signs of a gun being over gassed?i think i may have one that is,if my logic is right.thanks |
| Well you could look at the headstamp of your brass to look for really bad swipe marks. You will get some degree of swipe and extractor marks but overgassed guns do it more so. Also is this a 16 inch barrel with a carbine gas system because if it is then it most certainly is overgassed and you should be running at least an h2 buffer maybe even an h3. Over gassed you will feel more recoil and your ejection pattern could be throwing them forward more than to the 3 or 4 o'clock. In my opinion the carbine gas system (7 inch) was never meant to have a 16 in barrel in front of it. I own a colt 6920 and to me it feels over gassed now that I own a bcm 14.5 midi. by the way i run an h2 buffer in my 14.5 mid length gas system. I think you should run the heaviest buffer possible as long as you are not getting malfunctions, also let the gun get dirty while you are testing buffers because things will slow down a bit. can we get some details on your weapon? |
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Quoted:
It's usually when people spend too much time reading gun forums. What ammo? Does your rifle malfunction? If not, DON'T MESS WITH IT! it could very well be over gassed and not malfunction at all but all the moving parts will be taking more of a beating than neccessary, thats why they have different weight buffers and such. |
| well it is a ar10 i built.i was shooting ppu white box ammo.every now and then it will not extract the spent round,all the while trying to put a unshot round into battery.the spent brass has some pretty strong extracter marks on it.it seems like the bcg moves rearward before the case has a chance to shrink back down and extract out. |
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Quoted: Does your rifle malfunction? If not, DON'T MESS WITH IT! Comparison of a Theoretical and Experimental Study of the Gas System in the M16A1 Rifle Effect of Varying Port Diameter The port diameters used in the test were 0.030, 0.060, 0.092, 0.094, and 0.120 inch. The effect on the functioning of the weapon indicates that the practical limits for the port diameter lie between 0.060 and 0.120 inch, assuming no other parameter is changed. With the smaller port the bolt-carrier buffer failed to reach the rear of the receiver and with the larger port the buffer button was compressed to the extent the carrier key impacted the rear of the receiver. |
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