Anybody firing theirs? Trouble with chambering?

I know of two for sure that are short chambered. Still another that is crazy tight but will fire and cycle as long as you let the bolt slam home with everybit of force the spring has to offer.

Just throwing this info out there for any of you that purchased for a future build and have not used it yet.

Mine runs like a champ. Has eaten 500+ rounds with a mix of various commie steel-case ammo... and about 200 Remington UMC brass.

Anybody firing theirs? Trouble with chambering?

I know of two for sure that are short chambered. Still another that is crazy tight but will fire and cycle as long as you let the bolt slam home with everybit of force the spring has to offer.

Just throwing this info out there for any of you that purchased for a future build and have not used it yet.

I seem to have to let the bolt slam forward with the release to get it to properly chamber. It does seem like it runs better with steel cases:confused:

if it's that tight, you really should throw a headspace guage in it.

I've only run about 60 rounds through mine but it worked flawlessly. I plan to run a couple hundred through it as soon as the temperature gets above freezing here long enough for me to get to the range.

I have put at least 500 rounds of mixed steel and brass cased and it has ran great. The only problem I have had I blame on the cheap steel ammo, pulled the rim off the case.

Anybody firing theirs? Trouble with chambering?

I know of two for sure that are short chambered. Still another that is crazy tight but will fire and cycle as long as you let the bolt slam home with everybit of force the spring has to offer.

Just throwing this info out there for any of you that purchased for a future build and have not used it yet.

I was thinking thats normal with a AR..ride the bolt handle and they jam up vs drop the bolt and they work. Thats why people think ARs jam as they dont know how to run the things.

I threw mine on an extra lower that I had and sold it. Never even shot it, I hope that it will not have issues for the guy that bought it.

Mine shoots fine.about 100 rounds the weekend I got it in. No problems.

I was thinking thats normal with a AR..ride the bolt handle and they jam up vs drop the bolt and they work. Thats why people think ARs jam as they dont know how to run the things.

My other AR's I can ease the bolt down, it'll strip a round slowly and set it in the chamber. Then it'd take a couple bumps on the assist to seat into battery.

This one is a bit tighter than that. It will go but its definitely tighter than what i'd call normal.

I have ordered a go and a nogo gauge just to be sure on these. I'll report back the findings when those arrive. Outside of that, I have done everything I can to eliminate all the other variables. Which is really only brass or bolt. Bolt isn't in question as of yet, It's not getting far enough into the chamber for the bolt to rotate and lock up.

Put the brass is a sizing go - nogo gauge. Tried the brass in other rifles. All checks out OK. Just won't chamber in this one. So unless all my others are loose as a goose, this one has a problem. Also tried brand new brass sized by the factory, same exact thing.

I only ran a mag through mine but it was fine, then I made 250 off of it :D.

Ran about 500rds of PMC through it. I had one FTE and then it was having trouble seating rounds. The bullet would get jammed between the mag and barrell extender. Little lube and all is well. Mine is one that had the mis mached feed ramps. If it continues I will work it with a chainsaw file as suggested here. Overall I have been happy with it.

Good to hear most are working as advertised.

My other AR's I can ease the bolt down, it'll strip a round slowly and set it in the chamber. Then it'd take a couple bumps on the assist to seat into battery.

This one is a bit tighter than that. It will go but its definitely tighter than what i'd call normal.


Not trying to be a dick at all, but that is not how an m16/ar is supposed to work. The forward assist is only there for tap-rack-bang. You're supposed to just let the charging handle go and let the buffer spring do it's job. How does the rifle shoot when you don't ride the bolt home? Any better?

Not trying to be a dick at all, but that is not how an m16/ar is supposed to work. The forward assist is only there for tap-rack-bang. You're supposed to just let the charging handle go and let the buffer spring do it's job. How does the rifle shoot when you don't ride the bolt home? Any better?

I know you are supposed to just let it go. I'm just saying you can ride the bolt forward and it goes into battery without much effort.

Comparing to these JSE uppers you can't really do that. It won't go into battery riding the bolt forward at all. Only reason we're riding the bolt forward is to figure out what's going on in there. 2 of the three uppers won't go into battery letting the bolt fly either. They jam up solid. It takes a good bit of prying to get the thing unjammed. The third will go into battery but you can tell its not right. Damn hard to clear an unspent round from the chamber.

i've only ran a mag or 2 through mine, but 0 issues. i checked my feed ramps, and they do not appear to be mismatched.

None of mine have any issues, nor do they have the fancy feed ramps. Call JSE they had a warranty.

Update to my earlier post above. I shot mine some more today with a 16x scope on it. About 200 rds through it without a single problem. Mine also has the plain feed ramps, not the fancy extended ones. I shot both Remington good stuff, Remington bulk and Monarch steel cased stuff and all worked great. I was shooting with the front on a sandbag on a bench and stabilizing the rear with my shoulder somewhat braced. I know I was shaking a lot but I was still able to shoot some 1.5" groups with it at 100 yds. If I had a 10 round mag I know I could support the whole thing on a lead sled and shoot some easy 1" groups.

Well I used this problem as an excuse to purchase some gaging and a chamber reamer.

All is well now. Didn't take much reaming and according to the reamer after the job, material was removed from one single spot in the chamber. Would appear to me as their chamber reamer had a chip in it. Bad spot was approx. 1/4" down from the shoulder. 2 turns with almost no pressure and slobbered with oil and it was done.

No go gage will not fit in the chamber but the go gage will. .003" difference between the two.

Nice. Sucks for everyone with a barrel from that particular batch, but glad it was an easy fix.

Nice. Sucks for everyone with a barrel from that particular batch, but glad it was an easy fix.

Agreed.

Somebody had mentioned they had some warranty. I would have used that option but have modded my barrel pretty extensively and didn't want to start over, Nor would I want to ask them to warranty it even though the problems had nothin' to do with the mods.