Normal primer wear?

[GFX_9]

Is this normal for 1-2 cycling of the same round? I dont have bullet setback worries like i do on my nightstand 1911's, but i noticed this on my nightstand AR. Manufacturer hidden from post write-up due to Iraqgunz shutting down my BCM thread.

http://i304.photobucket.com/albums/nn193/M3likeguns/B0B8908E-EE7A-4354-808A-CDEB34F17C1F_zpshi04mofh.png (http://s304.photobucket.com/user/M3likeguns/media/B0B8908E-EE7A-4354-808A-CDEB34F17C1F_zpshi04mofh.png.html)

[boombotz401]

The AR system has a free floating firing pin, everytime you drop the bolt on a round the pin touches the primer.

It's normal


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[GFX_9]

Is this an issue to worry about or is it mostly cosmetic and just a round to blow off at the next range trip?

[boombotz401]

Looks like military brass which has harder primers, I wouldn't be concerned but i also wouldn't keep dropping the bolt on the same round. It's unnerving to see a primer strike on the round but it's all in the design, I'd be more cautious if there reloads to make sure the primers seated correctly.

If for some reason you need to unload/load often I'd rotate the rounds or just leave the chamber cold, especially if you've already got a 1911 ready to roll




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[Iraqgunz]

Hiding the manufacturer is smart, since this occurs with ALL AR's.

Your previous post was in violation of the site rules and has NOTHING to do with this issue.


Is this normal for 1-2 cycling of the same round? I dont have bullet setback worries like i do on my nightstand 1911's, but i noticed this on my nightstand AR. Manufacturer hidden from post write-up due to Iraqgunz shutting down my BCM thread.

http://i304.photobucket.com/albums/nn193/M3likeguns/B0B8908E-EE7A-4354-808A-CDEB34F17C1F_zpshi04mofh.png (http://s304.photobucket.com/user/M3likeguns/media/B0B8908E-EE7A-4354-808A-CDEB34F17C1F_zpshi04mofh.png.html)

[bigedp51]

Remington ran Lake City Army Ammunition Plant from 1941 until 1985 and used the Remington 7 1/2 primer in all its 5.56 ammunition during that time. So if your thinking of switching to CCI mil-spec primers they are not needed. During the test phase of the M14 and M16 rifles the firing pin was lightened to prevent slam fires. The vast majority of slam fires occur when loading a single round without the magazine in the rifle to slow bolt velocity. And if you think the mark is bad with your AR15 then get a SKS and see even bigger dents in the primers.

As long as you use primers with a cup thickness of .025 you are good to go with any AR15 rifle.

http://i122.photobucket.com/albums/o254/bigedp51/calhoonprimers02_zpsb8295b11.png

[markm]

but i also wouldn't keep dropping the bolt on the same round.

I agree. Chambering and extracting is somewhat rough on a live round. I keep my house gun with a round in the chamber... I'll only rechamber the round once or twice before rotating it off to be shot at the range.