Here's the deal. I can't seem to get a reply from the company so I will ask you all what your thoughts are. I know it isn't a precision rifle, but It is a new shooter looking to advance and getting a bad taste for rifles already.
16" barrel Carbine AR15 (their base model) from Core 15 Rifles. It belongs to another Marine in my unit and he asked me to look at it.
At first it would not chamber rounds about 75% of the time when it did, you had to use a wooden dowel and a hammer to get them out most of the time. This is 4 different types of 5.56/.223 Cycling it empty it would stick a bit (it has only successfully fired one round) but nothing hard, just like it needed polished up/broke in a bit. Swapping a bolt from my favorite AR into it resulted in a smooth cycle empty, but no change chambering/ extracting. His bolt in mine ran good all the way through. I polished a couple of the contact points with 1200 grit and her cycling smoothed out empty, no change with a round involved.
So without the ability to make a chamber cast, we went thought and measured the exact rounds that gave us the issue. They would have a shoulder base of .353-.354 (spec is .354). The ones that would cycle would be .352 and under. This leads me to think a worn reamer was used to cut the chamber as the shoulder wears the fastest with them and that also seems to be the jamming point.
I know there are "tight chambers" and have a couple, but this is in no way a match gun, and the dimensions I am looking at are way to tight for a semiauto gun to even think of running. Trying to get an answer out of the company has been frustrating at least. No reply or placed on hold forever and dropped. With the warranty being their real only selling point, I am thinking it is worthless now.
The Marine is looking at a barrel swap as his only real option to get this thing to reliably run. Before he does that, I was looking for other options.
16" barrel Carbine AR15 (their base model) from Core 15 Rifles. It belongs to another Marine in my unit and he asked me to look at it.
At first it would not chamber rounds about 75% of the time when it did, you had to use a wooden dowel and a hammer to get them out most of the time. This is 4 different types of 5.56/.223 Cycling it empty it would stick a bit (it has only successfully fired one round) but nothing hard, just like it needed polished up/broke in a bit. Swapping a bolt from my favorite AR into it resulted in a smooth cycle empty, but no change chambering/ extracting. His bolt in mine ran good all the way through. I polished a couple of the contact points with 1200 grit and her cycling smoothed out empty, no change with a round involved.
So without the ability to make a chamber cast, we went thought and measured the exact rounds that gave us the issue. They would have a shoulder base of .353-.354 (spec is .354). The ones that would cycle would be .352 and under. This leads me to think a worn reamer was used to cut the chamber as the shoulder wears the fastest with them and that also seems to be the jamming point.
I know there are "tight chambers" and have a couple, but this is in no way a match gun, and the dimensions I am looking at are way to tight for a semiauto gun to even think of running. Trying to get an answer out of the company has been frustrating at least. No reply or placed on hold forever and dropped. With the warranty being their real only selling point, I am thinking it is worthless now.
The Marine is looking at a barrel swap as his only real option to get this thing to reliably run. Before he does that, I was looking for other options.
