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Posted: 9/21/2006 7:36:45 AM EDT
| Has anyone ever had their AR-15 shoot two or three rounds in one trigger pull? Recently my Olympic Arms AR-15, with NO modifications has been shooting two or even three rounds on one trigger pull. It dosn't happen every time, but does so frequently. Anyone ever had this happen? |
| I heard that someone said if you're holding the magazine a certain way that it would fire simular to a three-round burst. When it first occured I was leaning the magazine on a bench and I thought it was like what he was discribing, but I stood up and it happened again. |
| Try this test a couple of times as you said it only happens sporadically. Make sure the weapon is unloaded. Weapon on Semi, pull the trigger and hold it down. While it's held down, pull the charging handle to cock the rifle. Then release your hold on the trigger. If the hammer goes forward and isn't held in the cocked position, you need to replace your fire control group. |
Leave it on Burst 
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Here's a good one for you. I have an Oly/Dalphon 9mm upper mated with standard lower, using Oly sten mags. Shoots like a dream except when I use wolf ammo (very rarely), it goes full auto and dumps 8-10 rounds. Sometimes it jams, other times, I reset the trigger, shoot one or two rounds and there it goes again. Still haven't figured out what causes it! Go figure! |
FWIW... Keep in mind that the AR15 system uses the magazine well to redirect any explosive forces if your weapon prematurely detonates a round, or if excess chamber pressures causesa failure. It blows out the mag well and toward the ground. 'resting' the magwell on a table will cause this system to not work as designed i nteh event of a catastrophic failure of the weapon. I would advise you to get your gun fixed, and to NOT obstruct the ability of the weapon to protect you in the event of a failure. TRG |
+1 i have a thread around here somewhere on my SBR i KB'd. there is a few pictures i posted so everyone could see the carnage. one look at that mag and magwell afterwards has convinced me that holding the mag and/or magwell while firing is NOT a good idea. FWIW, after i cut my upper off my similarly wrecked lower, i decided to try to get the mag out. it took a hammer, a couple long flat screwdrivers, pliars, vise-grips, and a lot of swearing. the mag had blown out so hard it was literally extruded into every little nook and cranny in the magwell. some of the metal from the mag even flowed out into the mag release. |
Well, that won't hurt, but the most common cause of the condition you describe is a worn hook on the disconnector. It wears just enough so that the hook, which engages the shoulder on the rear of the hammer is just barely hanging on the edge of the shoulder, and the slam of the bolt/carrier assy is knocking the hammer off the hook. Go for a new dixconnector first, and if you still have the problem, the hammer is the next part to change over. The trigger itself is hardly ever the source of the problem. 
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