Db1986

Also I have an h3 buffer from bravo company, would it be a good idea to try that out? Would that slow down the bcg enough to eliminate the bcg from hitting the buffer tube?

Yes that is the buffer tube kit I installed. Could a dirty chamber cause poor ejection? It was pretty dirty, I didn't inspect the chamber before assembly. I cleaned it and haven't had a chance to fire it since yesterday.

I'm using the spring and buffer that came with the POF kit it is a rifle spring with an ar 15 size buffer. Its a good deal stiffer spring.

I feel like there is more to it also, the POF buffer tube I have has a feed ramp so I wouldnt be able to tell if the bcg was hitting it. I could tell every time the 18 hit, I fired 60 rounds out of the 16 and the old buffer tube didn't change, I checked every few rounds I fired.

Looks like internal depth of the reciever extension is around 7.1, thanks for the info 98z5v. I changed it out for a POF 7 position buffer system kit. I fired it but I'm still having ejection issues. Also My bcg is not hitting the buffer tube anymore and I still have lock back. Both bcg I have are aero precision black nitride, they both work fine in the 16 inch black nitride ballistic advantage barrel, but in my 416r ballistic advantage stainless Hanson barrel with nickel boron barrel extension the spent shell casings are still falling out.

When your measuring the internal depth of the buffer tube are you measuring the whole tube or past the detent and threads?

Yes that makes perfect sense and I'm going to measure the internal depth of the reciever extension. Would that cause my spent casings to not eject properly? On the 16 inch upper they eject fine.

The spring has 29 coil and the buffer is 2.5 inches

Yes same lower for both, .0781 is the gas port for the 18 inch. I will get exact measurements of my 308 buffer and spring when I go to my shop. I know the buffer is shorter than my ar 15 and the spring is longer and a lot stiffer. I'm almost positive that the spring and buffer are correct. Could the gas system cause my casings to not eject properly if my bolt locks back after firing only one round each time? Or could the chamber be the issue?

My recoil system is mid length gas tube with aero precision 308 carbine spring and buffer. If I'm not mistaken the Hanson profile barrels are slightly undergassed, I'm baffled why my spent casings are ejecting properly out of my ballistic advantage 16 inch with mid length gas system, but not out of the 18 inch. The 16 inch also doesn't cause the bcg to strike to buffer tube. The gas port holes are both extremely close in size in the 16 and 18 inch barrel.

It is all aero precision parts except buffer tube which is a standard carbine mil spec buffer tube with aero precision 308 carbine buffer and spring. Gas block is staked and perfectly lined up from the manufacturer. Yes it's definitely the proper gas tube. It seems to be getting enough gas, it would lock the bolt back every time I fired just one round. Could it be a chamber issue? Spent casings just fall out with both bcgs I have.

I have an aero precision m5e1 with a 18 inch ballistic advantage Hanson barrel. I'm having ejection problems with 2 different aero precision bcg in this barrel, the casings basically fall out instead of being thrown out. If I use either of the bcgs I have in my other 16 inch barrel the casings are thrown out instead of being falling out. I also have marks where my bcg hit my buffer tube with the 18 inch Hanson barrel, with the 16 inch this doesn't happen. My bolt locks back every time on single loads also. If anyone has any ideas what could be wrong I would appreciate it.