I have a Bushmaster XM15E2S (16" barrel/carbine) and have installed an ARC FIRE V2 FRT kit with milspec trigger. I have a full auto BCG. I went through all of the videos and am sure it is installed correctly. When I have the lower separated I tested all functions and they work correctly. The gun works fine on semi and ejects propperly but fires once on FRT mode and them has a dead trigger. I ejected the unspent round in the chamber and found a light primer strike indicating bolt bounce. I used the stock carbine spring with standard (3 oz.) buffer as well as H2 and H3 buffers. I installed a Springco Blue spring and tried all weights of buffers with the same result. My ammo was 5.56 M855. This gun does not have an adjustable gas block but from what I read, it is gassed heavy from the factory so it can fire all rounds of .223/5.56 ammo. Do you think it is not getting enough gas? I really don't want to go through the hassle/exspense of installing an adjustable gas block. Any ideas?
ARC Fire not working
- Thread starter Tangomike
- Start date
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- Tags
- ar15 arc fire kit
TEXASforLIFE
SAINT
if it doesn't have enough gas the bolt wont cycle back enough to get the next round from the mag..................if it's cycling to fast then it wont get the nest round either................need to know ejection pattern to help answer
Condition1
Master Class
My guess is it’s trying to fire out of battery. Kind of hard to say for sure without the gun. Hope this helps.
I found out I was using the wrong type of buffer. I was using solid core and not the type that has reciprocating weights. I bought the solid core because they were less expensive but now I find I should have spent the money to get the proper buffer. I ordered a Tromix H3 buffer weighing 5.1 oz. which I am told would be what I would need. Once received I will test it to see if it works and if my AR15 requires further tuning.