Checking AR-15 Firing Pin Protrusion

[@barrylavinder2186]

Wow ! About as clear and concise as you can get. . . Thank you !

[@LL-be3rh]

Your videos are so help , thank you for the time you take to do this service for those of us who are not able to attend the course !!

[@chriscolt8940]

I totally agree thank you!!

[@Ridinfixinman]

He really is saying an awful lot to someone who is handy in life. Gotta say I appreciate it!

[@jtcustomknives]

As a machinist I love that when you turned off your calipers you opened the jaws. It’s a cardinal sin to keep your jaws closed while not being used. It can cause corrosion by ducking moisture between the 2 surfaces.

[@chrishesotian1654]

we made those ptg/brownells gauges at Colorado School of Trades!

[@JohnSmith-ng2ek]

Im watching all your videos and I've learned alot on what to look for when it comes to issues. If i have ever any issues with my m&p sport 2. I'll definitely look forward to sending it to you

[@kwater003]

Does firing pin protrusion change much over the life of a gun? As the round count increases does protrusion increase, decrease or stay about the same?

[@chriscolt8940]

Thank you for all you’re videos!! So helpful!

[@michaelsutton210]

Where did you get the flat, flush tip for the igaging tool? I just purchased the full kit and it only includes the rollerball tip, extensions, etc. but NOT the tip seen at 3:54 mark. Thanks

[@michaelsutton210]

Igaging customer support confirms they do not have or sell that tip, so I'm extra curious now.

[@AKMoffat]

@@michaelsutton210 he mentions in another video that he modified one of the tips in that kit in his lathe.

[@rudolphferdinand3634]

Thank you 🙇! Since my leaving the Army, where I knew absolutely nothing about the M-16/AR-15 other than loading and firing the rifle, I learned more after saying bye-bye to the Army, 13 years service.

[@marcelbenicio2596]

i know it's pretty off topic but do anybody know a good place to stream new series online?

[@guslionel9360]

@Marcel Benicio I watch on FlixZone. Just google for it :)

[@mosesdouglas2240]

@Gus Lionel Yea, been using Flixzone for since march myself :D

[@marcelbenicio2596]

@Gus Lionel Thanks, I went there and it seems like a nice service :D Appreciate it !

[@guslionel9360]

@Marcel Benicio Happy to help :D

[@abolishtheatfandrepealthen6014]

Love learning all these methods of gauging

[@pimp.avogadro]

I haven't gone through your entire playlist yet but can you do a video on dwell time and cam pin wear on the upper receiver.

[@WhoIsGodReally]

How do you fix the problem of too much protrusion? I’m marking my primer when cycling.

[@shuckydarns710]

I’m sure you have figured this out in the past 2 years, but a dimple in the primer is normal after chambering a round due to the free floating firing pin design.

[@gsmithy7995]

Any idea what an enhanced fp should mic to for 7.62x39

[@mymusicaccount1456]

Did you find out? My new 7.62 started out perfect, but after 60 rounds began to have issues with non firing, then stopped firing completely. It dents the primer but no fire. I measure .022 which is undersize.

[@gsmithy7995]

@@mymusicaccount1456 no I just bought one from black rifle company I believe and an extra power hammer spring , I did find out that century arms had some bad steel case ammunition and sent me back some I sent pictures of the primers almost pierced and no ignition . I will mic my enhanced compared with a mil spec and get back to you

[@tifosinh]

You could get a depth gage base for your Mitutoyo calipers which would make it a lot more accurate and easy to use in this application, which would perhaps be recommended for the hobbyist instead of having a dedicated depth gage?

[@ctanderson4118]

I have learned a ton of info from watching your videos. I have the same depth gage as your iGaging. Where did you get the small flat end? Mine came with a pin end two rou button ends and a large diameter flat end but it wont fit in the bolt face. Thanks.

[@oscarostolaza1]

Can you use the digimatic gauge to measure the distance between the bolt face and the inside channel of the bolt face where the firing pin comes out to determine if the depth is correct and if so what is the min/max range of such measurement? and can this measurement also determine the headspace?

[@IsaiahChapter53isAboutJesus]

I'd like to suggest a much cheaper method. Use feeler guages to measure the space between the bolt tail and the firing pin flange after you lined up the firing pin tip with the bolt face. You're welcome.

[@jameshill5304]

What about the protrusion for LR 308 firing pin?

[@davidgarrison9823]

New owner here. I have an Anerderson AM -15. I notice when I pull bolt back I can not see any of the fireing pin protruding at all. Looks like just a small pin hole. Is this normal? I haven't tried firing for this reason fearing something may be wrong. I feel stupid for asking but I bought it used from someone who only used a few times still looks brand new. Thank you

[@nickb317]

You shouldn't see the pin protruding when you pull the bolt back. You should only see the pin hole. The pin should not protrude out of the hole until you pull the trigger and the hammer strikes the pin, which ignites the primer. When the bolt cycles back, the hammer will reset and your pin should no longer be visible. However, the pin 'floats' meaning there is no spring to keep the pin from moving forward. So you might see the pin sometimes. "...the titanium firing pin is so light, it doesn’t develop enough energy to fire the cartridge during the chambering of a round, or if the rifle is dropped. The AR-15 has a hard-hitting hammer that is required to force the titanium firing pin into the primer hard enough to fire the weapon. That hammer doesn’t touch the free-floating firing pin during chambering of a round or when the rifle is dropped." For more info: www.idahostatejournal.com/outdoors/xtreme_idaho/the-free-floating-firing-pin-in-the-ar-15-rifle/article_30861593-dee9-522c-aa04-b677335e65a7.html

[@davidgarrison9823]

@@nickb317 Thank you very much for taking the time to tell me this. I really appreciate it. I have asked a few different channels and you're the only one to respond. Thank you again. God bless.

[@nickb317]

@@davidgarrison9823 No problem. As fellow gun owners, we should be looking out for each other. Let me know if you have any more questions. I'll be more than happy to help!

[@davidgarrison9823]

@@nickb317 Thanks again and will do!

[@mymusicaccount1456]

Would this range of protrusion be the same for ar chambered in 7.62? I had about 60 shots without a problem (new build, zeroing in scope), but suddenly my new gun had a couple failure to fires in the 4th box of 20, then stopped firing all together during the 5th box. Changed to a different box of ammo and still no fire. I packed up because i figured it was just dirty, but when i broke it down i didn't see an unusual amount of grime, but i did measure the protrusion at .022. As far as i can tell the pin still has a dome on the end, it does not look broken.

[@jonf1812]

How can I check for what specs my ptr91 should be?

[@apcoan]

Hi. Is the protrusion for an Ar10 (.308Win) the Same?

[@chrispybean]

AR10 308 firing pin protrusion = 0.044" - 0.060" (0.055" - 0.060" preferred) ...I found this online. Hopefully this helps

[@apcoan]

@@chrispybean Thank you very much. Now I just have to convert in mm ‘cause we got the metric system Herr in Germany.

[@garycampbell7999]

Okay, mines to long! Simply asking now what? Buy new firing pins til one measure correctly? 🎤