FX9 shooting out of battery
- Thread starter metamatt
- Start date
SurplusShenanigans
Member
- Location
- Calgary, Alberta
I'd have to look at it but I replaced the spring over a year ago and I don't recall having any issues getting it to fit and the firearm has functioned perfectly for thousands of rounds so far.
Don't take my word as from a professional. I like working on mechanical things, guns just a smaller group of it. I'm still kind of new to this AR lego game, but there is nothing much of rocket science here as far as I see.
The AR custom parts market is so huge. Although, most them are gimmicks which try to fix something, which was not broken in a first place.
FX-9 does have a few things which scream to be fixed, but not sure the buffer spring is one of those. Supposedly flat wire spring is a bit stronger. But so you might get an ordinary +10% spring for that matter. I guess the main problem flat wire is addressing is some funny sound - which I never heard, since I shot with earmuffs anyways like most of shooters do as well. So I care less about that sound whatever it could be.
I think the design and build perfection level of FX-9 is about 90%. Which is ok for it's price. To bring it to 100% - there are some known quick and cheap fixes (which I mentioned earlier), but there also will be expensive mods, like custom trigger groups, fancy furniture and other custom parts. Basically you add another 100% the the gun's initial price to make it 10% better if ever so. More of feel good factor. But that is all our life is for.
The AR custom parts market is so huge. Although, most them are gimmicks which try to fix something, which was not broken in a first place.
FX-9 does have a few things which scream to be fixed, but not sure the buffer spring is one of those. Supposedly flat wire spring is a bit stronger. But so you might get an ordinary +10% spring for that matter. I guess the main problem flat wire is addressing is some funny sound - which I never heard, since I shot with earmuffs anyways like most of shooters do as well. So I care less about that sound whatever it could be.
I think the design and build perfection level of FX-9 is about 90%. Which is ok for it's price. To bring it to 100% - there are some known quick and cheap fixes (which I mentioned earlier), but there also will be expensive mods, like custom trigger groups, fancy furniture and other custom parts. Basically you add another 100% the the gun's initial price to make it 10% better if ever so. More of feel good factor. But that is all our life is for.
While a flat wire spring may reduce some bit of noise from the buffer tube, that is not the purpose of a flat wire spring. Nor is the intention to be 'stronger' than a normal round wire spring. In fact quite the opposite, at least in one sense; a flat wire spring comes closer than a round wire spring to providing constant force, where a normal round wire spring provides increasing resistance the more it is compressed. So for a blowback system where FTF/FTE problems emerge, one treatment is to use a spring which offers modest initial resistance such that the bolt and buffer weight can continue moving all the way through the cycle without encountering increased resistance at the critical last 10% or so of movement, where ejection takes place and a new round is then stripped from the magazine.
If a round wire spring comes close to doubling resistance against this movement, as was the case with the stock spring in my TNW ASR, any lower powered cartridge or slower burning powder is more likely to prove inadequate for getting the bolt/weight to move through that last bit of travel. Replacement with a flat wire spring offering close to constant resistance throughout the cycle, momentum of the bolt/weight is better able to keep the system moving until ejection and grabbing a new cartridge is completed.
