REARSPROCKET Posted January 21, 2021 Report Share Posted January 21, 2021 Haven't seen this discussed here, seems the AR10 and the 308AR BCG take a (larger?) specific firing pin retaining pin. I have seen both the original AR style solid pin with a split on the end used and the newer cotter pin style. Where is the best place to source the cotter pin style FP retainers ? Quote Link to comment Share on other sites More sharing options...
98Z5V Posted January 22, 2021 Report Share Posted January 22, 2021 Yes, they do use larger, longer pins, if you're comparing it to the AR15 part. No way, no how will the AR15 part work in a .308AR. Searching online is the best way, just to find some - but everything is backordered right now. I'm on a waiting list for 4 of the solid pins, just waiting. Used my last spare a few weeks ago. Quote Link to comment Share on other sites More sharing options...
edgecrusher Posted January 22, 2021 Report Share Posted January 22, 2021 I may have one, need to check parts bin tomorrow after work Quote Link to comment Share on other sites More sharing options...
REARSPROCKET Posted January 26, 2021 Author Report Share Posted January 26, 2021 The Aero carrier I have came with the solid pin, but when installed the tip with the split end sticks out the side of the carrier too far and will contact the upper. So I need a shorter solid pin or a cotter pin style . Quote Link to comment Share on other sites More sharing options...
392heminut Posted January 26, 2021 Report Share Posted January 26, 2021 5 hours ago, REARSPROCKET said: So I need a shorter solid pin or a cotter pin style . Or a file and just a little bit of elbow grease! Quote Link to comment Share on other sites More sharing options...
98Z5V Posted January 27, 2021 Report Share Posted January 27, 2021 Yep, cut it down. Pics would help, so we could see how much protrusion you're talking about. Pics of actual problems are becoming rare these days, it seems. Quote Link to comment Share on other sites More sharing options...
REARSPROCKET Posted January 27, 2021 Author Report Share Posted January 27, 2021 So I ordered some S&W M+P10 retainers and they arrived today, it seems S&W uses the smaller 5.56 FP retainers in their 308 platform?. The original FP retainer's split end sticks out about 3/32 - 1/8 past flush. If I shorten the tip the chamfered nose of the split will be gone. I measured the diameter of the solid pin at .123 so it seems they are 1/8". I forgot to measure the length to see if there is a shorter cotter pin style I can modify to use. Quote Link to comment Share on other sites More sharing options...
REARSPROCKET Posted January 27, 2021 Author Report Share Posted January 27, 2021 I measured with caliper it sticks out .045 and the OAL length of the solid pin is .945 so I guess I need a .900 length pin. Could someone measure the length of their pin so I know if this one is out of spec ? Quote Link to comment Share on other sites More sharing options...
392heminut Posted January 28, 2021 Report Share Posted January 28, 2021 My spare retainer pin measures at .880 so my guess is that you have an out of spec retainer pin. Quote Link to comment Share on other sites More sharing options...
REARSPROCKET Posted January 28, 2021 Author Report Share Posted January 28, 2021 Thanks I'm glad it's not the carrier. Quote Link to comment Share on other sites More sharing options...
REARSPROCKET Posted January 29, 2021 Author Report Share Posted January 29, 2021 Hemi would you know what brand or who the manufacturer is ? Seems there are other pins out there that are the same length as mine. Quote Link to comment Share on other sites More sharing options...
392heminut Posted January 29, 2021 Report Share Posted January 29, 2021 (edited) 2 hours ago, REARSPROCKET said: Hemi would you know what brand or who the manufacturer is ? Seems there are other pins out there that are the same length as mine. Sorry, I've had this thing in my spare parts for a couple of years now and I don't remember where I got it. Hell, I wake up in a whole new world every morning, old age will do that to you! Edited January 29, 2021 by 392heminut Quote Link to comment Share on other sites More sharing options...
392heminut Posted January 29, 2021 Report Share Posted January 29, 2021 (edited) I'm pretty sure it was this one, which is discontinued new since DPMS was sold. https://www.midwayusa.com/product/1003343920 Yup, just checked back through my orders there and that is where I got it back about 4 years ago. Edited January 29, 2021 by 392heminut Quote Link to comment Share on other sites More sharing options...
DNP Posted January 29, 2021 Report Share Posted January 29, 2021 Who was the guy on here that was putting together the spare parts kits? Was that dwilson? Anyone remember? Quote Link to comment Share on other sites More sharing options...
shooterrex Posted January 29, 2021 Report Share Posted January 29, 2021 KNS is who makes the retaining pins I use. Solid w/split ends. https://www.joeboboutfitters.com/KNS-Perma-Pin-Firing-Pin-Retainer-p/kns-perma.htm That is the one for the AR15 but they also make them for the large frame guns. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted January 30, 2021 Report Share Posted January 30, 2021 7 hours ago, DNP said: Who was the guy on here that was putting together the spare parts kits? Was that dwilson? Anyone remember? Yep, that's who it was. Quote Link to comment Share on other sites More sharing options...
jtallen83 Posted January 30, 2021 Report Share Posted January 30, 2021 16 hours ago, DNP said: dwilson A few parts but no BCG parts; http://www.dwilsonmfg.com/Parts_c_18.html?viewall=1 Quote Link to comment Share on other sites More sharing options...
REARSPROCKET Posted January 30, 2021 Author Report Share Posted January 30, 2021 Thanks, I looked up the KNS pins and they are not available for the 308 only 5.56 on their site ? I was thinking maybe a small o-ring under the head side of the pin would keep it centered and not protruding ? Quote Link to comment Share on other sites More sharing options...
392heminut Posted January 30, 2021 Report Share Posted January 30, 2021 Seriously, just file the thing down! Even if it doesn't leave that much of the split portion, once it's in the upper the pin can't go anywhere! Quote Link to comment Share on other sites More sharing options...
shooterrex Posted January 31, 2021 Report Share Posted January 31, 2021 KAK not KNS sorry https://www.kakindustry.com/kak-bcg-firing-pin-retainer-308 Quote Link to comment Share on other sites More sharing options...
REARSPROCKET Posted January 31, 2021 Author Report Share Posted January 31, 2021 Thanks guys, I ordered a few different pins from KAK, RCA and some regular cotter pin style, so I'll see what shakes out with them when they get here. I noticed Toolcraft uses the cotter pin style in their 308 carriers so that might be the best way to go. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted February 1, 2021 Report Share Posted February 1, 2021 5 hours ago, REARSPROCKET said: I noticed Toolcraft uses the cotter pin style in their 308 carriers so that might be the best way to go. I bent one, and so did a buddy. We're not exactly running factory ammo, either. That's why I switched everything over to the solid pins. The cotter pins are spares in the box, in case I break a solid pin, and am waiting for another to come in. Quote Link to comment Share on other sites More sharing options...
mrmackc Posted February 1, 2021 Report Share Posted February 1, 2021 On 1/30/2021 at 6:32 PM, shooterrex said: KAK not KNS sorry https://www.kakindustry.com/kak-bcg-firing-pin-retainer-308 Thanks, I ordered three of them. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted February 2, 2021 Report Share Posted February 2, 2021 I hope they send me my cut, like they promised... Quote Link to comment Share on other sites More sharing options...
shooterrex Posted February 2, 2021 Report Share Posted February 2, 2021 57 minutes ago, 98Z5V said: I hope they send me my cut, like they promised... How does that work? I posted the link and you get a cut? Sat down w/Dave last night and discussed what he needs to order for his 6ARC. Quote Link to comment Share on other sites More sharing options...
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