Ryan N

It seems that I drifted my own thread, LOL. I was having malfunctions with a Brownells slide that I tried to resolve. Along the way one of my attempts was mag springs. In the end I sent the slide back to Brownells for a refund and send a G34 slide to BattleWerx. I suspect my malfunctions will be gone now.

Slide came in from BattleWerx today after only 13 days. I've been a machinist for 30 years and am very particular. The workmanship on this slide is fantastic. I can't recommend them enough.

Update: The Wolff +10% springs are considerably weaker than my old Dawson springs. This pic shows the Wolff spring after leaving loaded for two days. I'm going back to Dawson springs which have been 100% reliable with the exception of the Glock 17 with Brownells slide. I've returned the Brownells slide and have sent a G34 slide to BattleWorx to be milled for a 507 cut.

Thank you.

I don't see a Wolff spring that states that it's for +5 Glock mags. All I see is the +10% Glock mags.

Aw, Dawson Precision.... that's right. Thanks guys.

I bought these 10 years ago or more and cannot remember who made them. Also, do you think I need new springs? What's a good +5 spring and where to get them? TTI is out of stock.

I've shot my EDC Glock 43X at quite a few USPSA matches in Limited. I shoot Limited because I carry AIWB and that's legal. To help even the playing field, I do use Shield Arms 20 round mags for matches. Even though I haven't had an issue with the Shield Arms mags in 2000 rounds, I don't totally trust them and use OEM mags for carry. I also shot several IDPA matches with my G43 (with Vickers +2 extensions) quite a few years ago. I have began to dabble in CO and putting together a G17/407C gun but I will circle back and shoot my 43X from time to time in matches for good measure.

Thanks for posting this Matt.

Big thanks to you and Alan for stepping up. I'm interested in checking this match out and hope to make a few of them this year.

Oh, one more thing. My QC10 never ran 100% until I went 100% QC10. I have 1000 rounds of a variety of ammo with zero malfunctions now. I suspect you might do fine with the right combination of parts but working through getting mine to run was frustrating. IMO I think it's important to match the lower, bolt and barrel from the same mfr.

I did one but SBR'd it. 5.5" QC10 upper with a 8.5" Odin Works hand guard that allows for a little bit longer reach and also allowing a suppressor to go underneath it. I swap the suppressor over to a fake can so I can shoot matches with it. It's not the softest shooting PCC because its set up to run any ammo and not tuned to run a gammer load. Bolt weight installed, 308 carbine spring, Blitzkrieg hydraulic buffer. It can be a little gassy with the suppressor on but apparently that's something you gotta deal with when suppressed. FYI, I recently built a 4.5" AR22 pistol and think the SBA3 brace is hard to beat. The 512C works great on this set up.

How often do you clean out all of the blow back crap out of the lower? I went a bit over 1K with a 243G and a scary situation happened. I pulled the trigger and there was a 1-2 second delay before the hammer released. It happened again and upon inspection I discovered that build up on the spring rods would hold back the hammer for a bit of time. Cleaning things up and all was GTG again. I have since moved the 243G over to another AR and swapped my PCC over to a CMC 9mm. 243G is a great trigger.... keep it clean.

I like a 50 yd zero for PCC because I want the up close hold overs to be the same as my other AR's. I have worked to create a habit of aiming 1.5" high at close targets with my 3gun AR and I want to do the same with my PCC AR.

Safety concern: if you experience "dead trigger" (hammer not releasing when trigger is pulled), be aware that once you pull the trigger the hammer could release at any moment. I recommend promptly unloading (while pointing in safe direction) and fully cleaning FCG components. I had an instance when I pressed the trigger and the hammer release a second or 1.5 seconds later. This happened about 1100-1200 rounds after I installed the 243G(with no cleaning inside lower). I now plan to remove FCG and clean every 700-800 rounds.

BTW, Optics Planet beat the Ebay price I saw of $279.99 by $5 so I got the 512C for $275+tax. <$300 delivered This is about the same price as any 510C I could find.

I ordered a 512C in red to replace my old trusty FF3.

I don't have either but plan to purchase the 510 or the 512. One disadvantage of the 512 I see is the mount. From what I've read, the 510c has a decent QD. The 512 doesn't.

I think your correct. I'm using the heavy springs which yield the lightest trigger pull. I have edited OP for clarification.

I shot Steel challenge today with PCC. Gun is a QC10 (upper, lower, barrel and BCG) and ran perfect with a variety of ammo but on the last 5 shots of the match I had to manually cycle the bolt before I could shoot. I looked into it a bit further when I got home discovered that the hammer wasn't releasing when I pull the trigger. As it turns out, there was buildup on the dual spring assembly which prevented the trigger from releasing. I removed everything, cleaned it and reinstalled it and all is good now. I'm using the heavy springs(which provide the lightest trigger pull). I wonder if the medium or light springs would have still allowed it to function. Anyone else have a problem like this with Hiperfire?PCC is dirty and I'm wondering how often folks clean the inside of their lower. Prior to this match I had about 1000 rounds through it with the 243G installed so I sprayed some brake clean in the FCG without removing it and blew it out with air.

Thanks for sharing your thoughts guys.

Thanks for the input. I was mistaking about bolt/buffer weight. It's currently 17.7oz for buffer and bolt(weight removed). Adding the weight will take it to 21oz. Powders on hand are 231, WSF, HP-38, Clays and of course TG.

5.5" barrel, QC10 bolt(weight removed), JP 308 Carbine spring, BK hydraulic buffer, bolt/buffer mass is ~17.7 oz. Load is 3.0gr TG under 147gr Xtreme(I plan on running 4.3gr TG under 115gr). I wish I would have done a vid without the suppressor. Do you think the suppressor helps or hurts recoil impulse on a std AR 9mm? Based on what you see in the video, do you have any recommendations for me? Change in technique, stance, install bolt weight, load, etc?

That's fantastic.