09-27-2011, 08:40 PM
Cycle the action using the charging handle about 200 or so times manually, with very little oil. This will break in the parts a little and make them function smoother. My Grendel shortstroked and had feeding problems the first 50 rounds. So, I cycled it several hundred times to smooth out the new parts. It help alot. Then, I ran it wet (lots of oil) for the first couple hundred rounds. Now, it works 100 percent. You have to break in AR's. All the parts are painted or coated with layers of rough (in comparison to smooth bare steel) coatings that rub against each other and cause friction. The coatings need to be smoothed out by a little wear before they slide more freely. Most of my first malfunctions with my Grendel were caused by needing break in and magazine issues.
I was having a similar problem with my first C-products magazines. The feed lips stuck too far up into the rifle and rubbed against the BCG and the square hole where the magazine catch grabs onto the magazines weren't cut right. Even after tweaking the lips they still wouldn't run right. I sent them back to C-products and they sent me new ones. I still had to tweak the lips, but they ran much better. Oh, the Alexander Arms mags are also C-products mags but with an AA bottom plate.
Ya just can't take a new out of the box AR to the range and expect it to function 100 percent right off the bat. without break in. You have to be a little patient with it at first. It's usually around the 250 - 300 round count before it smooths out completely and starts to run smooth.
I was having a similar problem with my first C-products magazines. The feed lips stuck too far up into the rifle and rubbed against the BCG and the square hole where the magazine catch grabs onto the magazines weren't cut right. Even after tweaking the lips they still wouldn't run right. I sent them back to C-products and they sent me new ones. I still had to tweak the lips, but they ran much better. Oh, the Alexander Arms mags are also C-products mags but with an AA bottom plate.
Ya just can't take a new out of the box AR to the range and expect it to function 100 percent right off the bat. without break in. You have to be a little patient with it at first. It's usually around the 250 - 300 round count before it smooths out completely and starts to run smooth.