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Posted: 5/22/2006 1:37:29 PM EDT
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Howdy folks. Took my spankin' new RRA middy to the range yesterday to get the irons sighted in and noticed firing pin marks on every round (primer) I chambered then cleared. This is my first rifle and I don't know whether I should be concerned or not. Any ideas? FYI - the ammo was AE223 if it makes a difference. |
| Yes-this is perfectly normal. I am a carefull type guy and I think any time I chamber any semi auto gun is a good time to be extra carefull where the gun is pointed.A normal situation should not produce a chance of AD but a chunk of something on the boltface,a broken or frozen fireing pin.dammaged trigger or sear parts,or ammo with high primers could possibly cause a round to go off |
Now that you mention it, why don't AR's use a firing pin spring? Being primarily a handgun person, I was quite surprised to learn of the lack of it in the AR. So the only way to safely carry an AR with a round in the chamber is "cocked and locked" (just as with a 1911, or at least the early ones). Was this done simply to reduce the complexity of a military weapon to make it more reliable? |
I think you have some reading to do, go ahead, i'll wait.
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If you ever wind up loading for an SR-25 (Knight's Stoner), do not use Fed 210M primers, although it is an AR platform (like the AR10), it has a much beefier firing pin, and WILL slam fire with soft cup primers like the 210M's. I had hi-lighted this fact in yellow, while saving up for mine. At some point I forgot the pointer, and loaded with 210M's, my hardwood floor got a nice character touch as a result (was chambering to check for land engagement... THAT bullet touched every land all the way to the muzzle). If you look at HK91/41 f-pins, they are fluted on three sides to reduce mass, I did that to my Stoner f-pin with a carbide end-mill on an indexer and reduced its weight by about 25% as I recall. Still never trusted it with those primers again. CCI BR primers are GREAT choice to that end, as they are all but fail-safe at eliminating that possibility with their cup firmness. The Armalite AR10 does have the rebound pin, and the bolt carrier group (cant just swap bolts) will work in the SR25. I have never heard of an AR15 slam-fire, and yes they always leave that mark, no worries. |
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