joesmoe_6 Posted May 21, 2014 Report Share Posted May 21, 2014 I have an Armalite AR 10 B that is short stroking. It will not pick up a new round from the magazine after ejecting the spent case. I am using the standard Armalite Buffer Spring and Slash Heavy Buffer. Any ideas on what I can do to correct this issue ? Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted May 21, 2014 Report Share Posted May 21, 2014 This can, usually, quickly be remedied with lots (read that as: LOTS!!!) of lube and good magazines. Also, make sure you're shooting decent quality ammo. Old mil surp 7.62 usually doesn't have the oomph to work a new rifle. You have to get through the break in period before the cheap ammo can come into play. Lastly, check your gasblock alignment. If it's tilted, loose or improperly installed, you may have a leak or blockage somewhere. Most leaks will fill with carbon and create their own seal. Did I mention LUUUUUUUUUUBE!!!!! Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted May 21, 2014 Report Share Posted May 21, 2014 Honestly... go buy a quart of full synthetic 0W50 racing oil, tie a string around the back of your BCG, drop it in the bottle and let it soak for a few days. After your rifle is broken in, you can switch over to [insert your favorite gun oil here]. Quote Link to comment Share on other sites More sharing options...
FaRKle! Posted May 21, 2014 Report Share Posted May 21, 2014 I am using the standard Armalite Buffer Spring and Slash Heavy Buffer.Any ideas on what I can do to correct this issue ?Does it short stroke with the standard H3 buffer? Which weight buffer did you get from Slash? Quote Link to comment Share on other sites More sharing options...
Rsquared Posted May 21, 2014 Report Share Posted May 21, 2014 Pay attention to the lube part that Robo was talking about. Plus, check your mags. New mags can make an issue from time to time until they break in. I just went through some minor hiccups with some new 10 rounders that I had to buy to go see some friends of mine out of state. My 20 rounders (that are VERY well used) don't, or rarely I should say, have feeding issues. Plus, that's a good question from Farkle. Try your standard buffer and see what happens. Quote Link to comment Share on other sites More sharing options...
joesmoe_6 Posted May 22, 2014 Author Report Share Posted May 22, 2014 Thanks everyone for the response. In answer to your questions I have a rifle length gas system on a 20" barrel. I have tried the standard H3 buffer and have the same issue. I have lubed the hell out of the rifle. I am shooting Hornady .308 168 grain A-Max Match ammo. The magazines are new 10 round mags Quote Link to comment Share on other sites More sharing options...
edgecrusher Posted May 22, 2014 Report Share Posted May 22, 2014 Not this is "the" answer, but try shooting something other than the hornady, I've heard of inconsistent cartridge lengths and other issues with their round. Try something loaded with a Sierra matchking Quote Link to comment Share on other sites More sharing options...
Sisco Posted May 22, 2014 Report Share Posted May 22, 2014 Is your rifle the Standard AR10 or the AR10 T? There was a fellow a while back who had a similar issue. It turned out to be an undersized out of spec gas port hole in the barrel. But DO NOT mess with that until you try all the above recommendations. If they don't work, it is time to take advantage of Armalite's lifetime warranty. They can check the gas port problem quickly and easily. Check out the thread below: Quote Link to comment Share on other sites More sharing options...
FaRKle! Posted May 22, 2014 Report Share Posted May 22, 2014 It turned out to be an undersized out of spec gas port hole in the barrel.If it is an under-gassed rifle you can also try a lighter buffer. I'm sure you have an AR-15 with a CAR or H weight buffer you can drop in there. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted May 22, 2014 Report Share Posted May 22, 2014 If its a stock AR 10 rifle , just talk to Armilite & may have to send it back. Rifle should function with 168 match ammo . If its been altered , what was changed ? OEM Rifle ? Did this just start or has it happened since day one. What other ammo , if any , were also tested in this rifle & what were the results. Quote Link to comment Share on other sites More sharing options...
Rsquared Posted May 22, 2014 Report Share Posted May 22, 2014 The man makes a good point. Quote Link to comment Share on other sites More sharing options...
joesmoe_6 Posted July 21, 2014 Author Report Share Posted July 21, 2014 Thanks everyone for their responses Answers to questions are as follows If its a stock AR 10 rifle , just talk to Armilite & may have to send it back. Rifle should function with 168 match ammo. I have modified this rifle so that is not an option If its been altered , what was changed ? I put a troy battle rail free float hand guard and low profile gas block on the rifle Did this just start or has it happened since day one. Started the first time I fired the rifle What other ammo , if any , were also tested in this rifle & what were the results. I have tried several brands of ammunition in this rifle Thing that I have done to correct this problem. 1) Lubed the hell out of the bolt carrier and upper receiver 2) Checked Gas Block Aligment miced out position of gas port versus barrel sholder and the low profile gas block. 3) Verified gas port size ( .086 ) 4) Used the standard buffer and spring. None of the above has resolved this issue Quote Link to comment Share on other sites More sharing options...
Sisco Posted July 21, 2014 Report Share Posted July 21, 2014 Check the alignment of your gas tube. When you replaced the forend make sure it was properly aligned again. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted July 21, 2014 Report Share Posted July 21, 2014 More questions , Did the rifle malfunction when in stock configuration ? Or did you change the hand guard before firing it the first time ? Do you still have the stock components ? Try loading one round in the magazine & see if ,after firing the one round , that the bolt will lock open after last shot . Try all the magazines you have . Quote Link to comment Share on other sites More sharing options...
shibiwan Posted July 21, 2014 Report Share Posted July 21, 2014 (edited) Rifle extension tube or carbine extension tube? Which heavy buffer? Did you try to slide the stripped bolt carrier back and forth in the upper receiver to make sure the gas key isn't catching on the end of the gas tube? It should slide freely with little or no resistance. Edited July 21, 2014 by shibiwan Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted July 21, 2014 Report Share Posted July 21, 2014 When you replaced your gas block, did you also replace your gas tube? Quote Link to comment Share on other sites More sharing options...
98Z5V Posted July 22, 2014 Report Share Posted July 22, 2014 I was reading through this thread, and wondering if this was a complete rifle that Armalite shipped to the customer, or if it had been messed with in some way... Anything at all changed from how it was delivered from the factory... Need to know what exactly (and all-inclusively) was changed from the factory rifle. Then, start looking there first... Quote Link to comment Share on other sites More sharing options...
washguy Posted July 22, 2014 Report Share Posted July 22, 2014 (edited) Exactly like 98Z said ! ^^^^^ you gotta go back to basics and one change at a time....soooo u said u miked the postion of gasport and gas block...doesnt make a rats azz....break down the upper from the lower...remove the bcg...plug up the chamber (finger,rag,sumthin) and squirt compressed air down the barrel from the muzzle end....or do like I do...the poor mans way...wrap your lips around the muzzle/brake being sure no air escapes the brake,and you should have a nice flow....but to be sure of full flow loosen the gb and kinda move it around both fore and back to see if the flow increases while the air is running out the gas tube....full flow is what you want while not torquing/flexing the gas tube... #2 like Shibi said....muzzle down..drop the bcg,,,it should go into almost full battery....charging handle should slide right into the gas tube... as for the stock/ buffer system...put it all back to stock.....also seems like u got a mag prob going but you wont know till she locks back on one round now go wash your mouth out :) Wash yeah....I know I left myself open on this one :) Edited July 22, 2014 by washguy Quote Link to comment Share on other sites More sharing options...
blue109 Posted July 22, 2014 Report Share Posted July 22, 2014 (edited) some people say I'm the life of the party cuz I tell a joke or two... Edited July 22, 2014 by blue109 Quote Link to comment Share on other sites More sharing options...
washguy Posted July 22, 2014 Report Share Posted July 22, 2014 some people say I'm the life of the party cuz I tell a joke or two... Yep thats me ! <lmao> Wash Quote Link to comment Share on other sites More sharing options...
joesmoe_6 Posted July 24, 2014 Author Report Share Posted July 24, 2014 Did the rifle malfunction when in stock configuration ? Or did you change the hand guard before firing it the first time ? I did not fire it in the stock configuration Do you still have the stock components ? Yes Try loading one round in the magazine & see if ,after firing the one round , that the bolt will lock open after last shot . The bolt will not lock back with a single round in magazine Try all the magazines you have . I have tried 5 different magazines all do the same thing Quote Link to comment Share on other sites More sharing options...
joesmoe_6 Posted July 24, 2014 Author Report Share Posted July 24, 2014 When you replaced your gas block, did you also replace your gas tube? I re used the gas tube from the original handguard and gas block I was reading through this thread, and wondering if this was a complete rifle that Armalite shipped to the customer, or if it had been messed with in some way... Anything at all changed from how it was delivered from the factory... Need to know what exactly (and all-inclusively) was changed from the factory rifle. Then, start looking there first... 1) I bought a Stripped AR 10 Lower receiver and assembled it my self. 2) I bought a Complete AR 10 Upper Receiver including bolt and charging handle. 3) I replaced the handguard and gas block with a troy battle rail free float hand guard and low profile gas block on the Upper Receiver Quote Link to comment Share on other sites More sharing options...
washguy Posted July 24, 2014 Report Share Posted July 24, 2014 (edited) The bolt will not lock back with a single round in magazine Try all the magazines you have . I have tried 5 different magazines all do the same thing -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Joe if it wont lock back on any mag you got a gas problem mostly...did you give it the "blow test"? Do you know for sure you are using an armalite gas tube thats in good shape.. Also...what buffer tube and stock is on it? that can make a difference you gotta resolve one problem at a time....if you got good flow in the gas tube and its got good transfer into the bgc....then you can start looking at the "other end"....buffer tube.spring, buffer In all my years of puttin together ar's.....I only had one fubar that drove me nuts.....It was on a 6.8 last year that would not lock back cant tell you how many hours i messed with it....rebuilt it too many times...the thing would not lock back after changing part after part . so the very last thing I could think of was the buffer tube I got off of Ebay....it was mis machined on the inside and was too short causing all the grief....the wall in the garage at the old home took a carrier hit right between the studs....so the moral is dont buy crap and when trying to solve a problem do one thing at a time .....give good info to the forum members...and then listen to what they suggest :) Wash Edited July 25, 2014 by washguy Quote Link to comment Share on other sites More sharing options...
98Z5V Posted July 25, 2014 Report Share Posted July 25, 2014 2) I bought a Complete AR 10 Upper Receiver including bolt and charging handle. 3) I replaced the handguard and gas block with a troy battle rail free float hand guard and low profile gas block on the Upper Receiver You bought a complete upper from Armalite, and that would have fired, for sure. You replaced the handguard (with barrel nut, also?) and the gas block. What model of Troy handguard did you use, because some Troy's run directly on Armalite barrel nuts. You need to focus on the parts on that upper that you changed - the problem lies in that. Not trying to be mean about it, but something with the parts you installed is not running that upper. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted July 25, 2014 Report Share Posted July 25, 2014 Put the rifle back to original configuration & see how she works . I suspect the Gas Block may not be aligned properly or it is not to spec's., But thats just a guess . Does the Bolt catch hold the BCG back on an empty magazine , if charging handle pulled to the rear & does the BCG stay locked back with the Bolt stop engaged ? What Receiver extension did you use ? Quote Link to comment Share on other sites More sharing options...
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