brix

I have the armaspec, I bought this first. As a 9mm buffer it works fine, the issue for me is that it doesn't soften the felt recoil like other systems. I decided to invest in a second buffer for a second build and bought an mbx. I now use the mbx in matches on my main build. It does a way better job mitigating felt recoil. If it were me I would have gone with the mbx from the get go. Sent from my BTV-W09 using Tapatalk

Another one for the mbx, I am running a mega. As far as Magwell what AR 9 lower do you have? BMiller is a great option but there are others out there but it depends on which lower you have since a lot of them are not the same. Sent from my SAMSUNG-SM-G935A using Tapatalk

This ^ Sent from my BTV-W09 using Tapatalk

I have one arriving today, got it from Brownells with a recent coupon for $165 shipped. Pretty excited to try it out. Sent from my SAMSUNG-SM-G935A using Tapatalk

I was going to say the same

Just as with anything it's a matter of preference. I also have a QC10 lower and have two uppers built out. One is a complete upper by Foxtrot Mike 16' I mainly use. The only thing I changed was the comp to a MBX. The other upper uses a ULW Taccom Barrel on a JoeBobs Spartan Receiver that I had lying around. Super light and mates well with the lower. The FM I had to mod the extractor a little bit but it's been for me in matches and I like the placement of the side charger much better. FM also is a good value considering what you get for the price especially if you can get them on sale which they do from time to time. Also I believe that they are a pretty decent company that cares in my dealings with them directly. Both QC10 and FM have been great with questions I had and their customer service.

I have a 16' inch upper running on a QC 10 lower. I am using a MBX comp and a Taccom3g buffer. I've shot a couple of local matches and it's been great. I did have some mating issues between the lower and upper but I figured it out and did a slight mod to the extractor to allow it to seat properly into the Bcg. (it wasnt lining up) but other than that my groups are really good shooting a 135gr bullet.

Staking on the Gas key shouldn't be an issue since it doesn't take in gas exhaust like a normal bcg. 9mm is a blowback and doesn't require the extra help to move the bcg. As far as the pin you can email them for a new one or just simply shave the tip with a file until is doesn't make contact with your bcg. Sent from my SAMSUNG-SM-G935A using Tapatalk

When people ask about this issue when shoot, I always say "I can neither confirm or deny these rumors” But it is what it is..... Sent from my BTV-W09 using Tapatalk

Very true, clubs won't enforce the current law since there is an injunction for ”grandfathered" standard cap mags in place currently, but mainly because screw Sacramento. Lots of PCC competitors with Glock fun sticks with mag extensions. Sent from my BTV-W09 using Tapatalk