BLL Posted March 29, 2021 Report Share Posted March 29, 2021 (edited) I just finished building a m5 .308. Won’t feed round to fire. I can place a round in barrel and BCG closes fine. It will sometimes feed several rounds after initial round fires, but not every time. When the next round goes into battery it sticks and is hard to get out with charging handle, requires two hands. Parts used in build: Aero precision M5 lower Aero precision upper Aero precision BCG Proof research carbon fiber 18” barrel.875 rifle length gas port troy gas block ss rifle length tube jp mklll hand guard precision armament hypertap muzzle break pmag 20 rd Burris XTR Genll milrad scope Edited March 29, 2021 by BLL Quote Link to comment Share on other sites More sharing options...
edgecrusher Posted March 29, 2021 Report Share Posted March 29, 2021 Please give us recoil system specs with weights and measurements. Gas tube location. And gas port diameter. Quote Link to comment Share on other sites More sharing options...
BLL Posted March 29, 2021 Author Report Share Posted March 29, 2021 Aero complete lower w/moe grip PRS rifle stock. Barrel and gas block are .875 w/ rifle length tube. Quote Link to comment Share on other sites More sharing options...
unforgiven Posted March 30, 2021 Report Share Posted March 30, 2021 That's not what he asked you Quote Link to comment Share on other sites More sharing options...
unforgiven Posted March 30, 2021 Report Share Posted March 30, 2021 You know the tube your stock is attached to Quote Link to comment Share on other sites More sharing options...
98Z5V Posted March 30, 2021 Report Share Posted March 30, 2021 (edited) 6 hours ago, BLL said: Aero complete lower w/moe grip PRS rifle stock. Barrel and gas block are .875 w/ rifle length tube. The PRS is now on the 3rd Generation, and can be mounted to a rifle receiver extension or a mil-spec carbine receiver extension. We need to know what you have for a recoil system, not what the stock is. And, the full specs on the recoil system. Receiver extension internal depth, buffer length, buffer weight, spring relaxed length with coil count, wire diameter... Gas port diameter on that barrel is gonna need to be 0.088"~0.093".Where does the gas tube end in the upper receiver. Pull the BCG out and take a pic that shows where the gas tube ends in the upper. Edited March 30, 2021 by 98Z5V Quote Link to comment Share on other sites More sharing options...
BLL Posted March 30, 2021 Author Report Share Posted March 30, 2021 I will have to check with Aero tomorrow for specs on recoil system. Their website doesn’t show anything on specific recoil system specs. I just ordered the complete lower, and was told it was compatible with a proof barrel. The gas port shows .875 on barrel and the box it came in. Do you get an oversized tube? Quote Link to comment Share on other sites More sharing options...
98Z5V Posted March 30, 2021 Report Share Posted March 30, 2021 (edited) 2 hours ago, BLL said: I will have to check with Aero tomorrow for specs on recoil system. Their website doesn’t show anything on specific recoil system specs. Or, you can do it yourself - and rely on the numbers that you get, instead of what someone tells you was supposed to go into the gun. PSA is famous for this - "it's THIS..." and, it's NOT. You can take it apart and measure and weigh everything yourself. That's the best way to go. Your gas tube length is good. Run with scissors on that part of it. Edited March 30, 2021 by 98Z5V Quote Link to comment Share on other sites More sharing options...
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