longbeard

Yup. That's nice looking! Sent from my SM-N950U using Tapatalk

Taccom works great and won't break the bank. Also about the lightest there is.

Post a picture

Curious about your thoughts between your MPX and AR9. Is there a significant enough difference as to think the MPX has a competitive advantage?

Nice lookin' rig!

To the best of my knowledge you want to use an AR9 firing pin. http://www.primaryarms.com/cmmg-ar-9-firing-pin-for-9mm-ar-rifles-90ba4d7 https://taccom3g.com/product/9mm-firing-pin/

This seems inline with what I have now. I'm roughly 100fps difference between ULW and 16". Not too far off your results.

I think this a must for an SBR.

I started having malfunctions a while back. It took a few days before I discovered the receiver-installed feed ramp from Taccom (which is great) had some wiggle in it. If you use this device make sure you check it frequently. Mine was epoxied in and lasted over 10K rounds.

Go with the AR platform. Tons of support. Tons of parts availability. Scorpion is a neat gun and definitely fine for casual PCC shooting, but if you plan to compete I think you'll want an AR 9. I would also recommend a 16" upper. SBR are definitely cool, tactical is not always practical in competition. Having the long barrel allows you to firmly plant that stock into the shoulder which will tighten your groups. Also, getting in and out of position with an SBR configuration always bothers me. Easier to sweep yourself. OP. I think we shoot together at Friday Night Steel. If so come check out my rigs next week.

I think downloading would defeat the purpose of the barney round. My DP base pad does +7. I always barney one first to start with 39. With new springs it's very tough to load the stuffed mag with a barney round. You can clip 1/2 a coil and get a little relief. As far as it dropping out. I make sure it's seated securely by slamming it in and gently tugging. I also always take a peek into the chamber as the last step in my make ready.

I'd go with the Hiperfire. Good support. Great trigger. I like the 24c. That being said I like the JP trigger best, but it can be a bit finicky.

Typically caused by so much mag spring tension that the bullets are nosing up. Are you using a round nose bullet profile?

That's gotta be what's going on. A sharpie and some dry fire should show this. I may try later. Curious....

Most seem to be made of tool steel. The upscale ones are stainless steel. How they are made I do not know. The tool steel ones I had all broke in the middle. The stainless one broke off at the head. Makes me think that they are being flexed by either being too long like when you bow a stick into the ground. The harder steel broke at its weakest point (the joint at the top) while the softer steel just fractures in the middle. Thoughts?

What exactly is causing the breakage? I've seen speculation on this forum, but do we know for sure?

Crap! Now I gotta sell everything to buy JP bolts so I can use JP firing pins! This game... I swear! ?

I thought they were only for JP bolts?

I suspect it has more to do with keeping the division on a level playing field. I would recommend that as a new competitor you get into a 16" carbine. To be candid, I have some seen some SBR configurations that I deem less than ideal for some of the handling requirements in USPSA. You'll want plenty of room out front to mount that gun safely coming into a position. Being wary of not sweeping yourself with an SBR (or worse) is a headache a new competitor doesn't need. There's a lot going on at once when you first start. Once you are adept if you want to SBR your PCC you will have a good understanding of what might suit you best. My .02

Feel your pain. My Taccom sheared off at the top within 2k rounds.

Spring goes in. Firing pin goes in next. Your pin has a circular lip at the top of it (depending what brand it may vary how it looks). You depress the firing pin with your finger to get the lip below the retaining pin hole and insert the retaining pin. When you are done you release the firing pin and the retaining pin will hold the entire firing pin in place because the circular lip cannot pass the retaining pin.

Stoned out the flaw. Gave it a good cleaning and light polish, and reinstalled. I'm taking a quick video of the timing for reference this time. One more time and it's time for something else!

Used to have yellow, and it stopped being reliable even after a new spring replacement a few months ago. I'm going to call and talk to them, but suspect it might be time to replace it. It's got a good 20k on it which really shouldn't be much. Sent from my SM-N950U using Tapatalk

No crud to be found I did find the sear has a nick and the hammer has worn unevenly. It's a QC lower. I can't imagine the pin holes are off. Whether this is the cause of my issues or not I am not sure. There are over 10K rounds on this trigger I expect wear. Not sure to what extent. The ding in the sear makes me think at some point something got caught in there, but I don't think it's from whatever happened lately.

LOL! I cleaned it Saturday. It failed Sunday. What's that tell ya?!