Anyone seen this before? Immediately deadlined the gun and required a brass punch and a hammer to get out. Took about 15 mins.
Looks like it ended up in the recess behind the ejection port and was dragged along the upper with the BCG. Mortaring didn’t work for two reasons. One, the damn thing was in there good. It wasn’t budging. Additionally, since the CTR does not collapse fully on the A5 RE the RE popped out the back of the butt stock. (Actually, it broke the “clips” that snap the butt “plate” of the CTR stock) That pissed me off.
Not concerned about the gouge in the metal. Looks as if it isn’t where the BCG contacts the upper, but I am concerned about mortaring with the A5 now. Normally, when mortaring with a carbine collapsing the stock fully allows the stock to stop against the castle nut. With an A5 and the CTR this is not the case.
Yep, I had a blown primer that locked up my 300 blk upper a few months ago. I had to disassemble the lower to be able to take the upper off. I had to hammer the BCG out to free everything. U just have to be careful and work slowly to not bend or break anything.
I did a lot of mortaring (training) with an A5 and a SOPMOD.
I collapsed the stock as far as it would go. It didn’t latch, but it was snug enough to stay collapsed and I was mortaring with the buffer tube against the rubber butt pad. Worked well for that particular stock and buffer tube, but if you don’t have a stock that will stay snug, or collapse all the way, mortaring is a no-go with an A5.
It happened to me as well about two weeks ago but with a standard RE. Ammo was Armscore 55 gr 223. My first instinct was a stuck case as it appeared the bolt tried to extract but locked up about 1/4 inch back. I then tried to mortar for about 5 minutes only to get the bolt stuck half way back but able to extract a perfect and undamaged case.
After removing the RE and pounding the bolt back into the receiver I located a primer lodged between the carrier key and charging handle. Needless to say I swore off that particular brand of ammo after that happened. Mortar ingredients would not have helped beyond the point that was reached during that particular incident.
I had this happen two weeks ago with some shitty FC brass (the old stuff that’s super weak) I tried to get a hot load out of it and was blowing primers left and right. Finally locked the gun up solid. Pushing the bolt group forward finally freed it up.
Blown primers in ARs are horrible. The primers seem to find their way into the worst possible places.
I use an SL on an A5tube and it almost collapses all the way. If I collapse it all the way, the pin is slightly ahead of the first hole. I pull it back about 1/16" and it locks in. I bet it would hold up to mortaring ok. It locks the same way as the EMOD that came with the kit…
I suppose that sometimes a popped primer falls harmlessly to the ground and we never know it happened. I suppose. Can’t be sure, because if it ever happened that way, well, I never knew it.
I don’t think many do that. Murphy is right there, and every primer that becomes separated from its case gets handed a holiday map to the inside of your rifle, featuring all the mischief-maximizing, prime locations. Between the carrier and upper receiver is one, for sure. In the barrel extension is also popular with these little “tourists”. With a little extra (bad) luck and gravity assist, under the trigger is equally effective at bringing things to a grinding halt.
Worst jam I have had in 30 plus years of AR was primer jam. Was in bolt/primer lugs. Felt like a mother of all jam brass between bolt and upper but would not mortar. Wooden dowel and mallet allowed bolt to cam little by little and finally unlock from chamber.
I was checking all of my stocks with my 7 position A5 and I figured the CTR would be good to go. If you collapse it all the way (in between position 1 and 2) the inside of the rear of the stock is in contact with the rear of the receiver extension. If you hit that part on the ground, I don’t see how anything could break.
It won’t as long as the stock doesn’t slide down and lock. That’s how my SOPMOD was. With the rubber butt pad, mortaring on concrete was super effective!
I’ve transitioned to Magpul MOE SL stocks recently and, as has been stated, if you bring the stock all the way forward, the back of the RE rests directly against the interior of the buttpad. Hindsight being 20/20 and all.
