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THE COMPLETE 9MM AR15 BUILD/INFO THREAD

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  • 97F1504RAD
    Calguns Addict
    • Dec 2008
    • 6315

    Looking forward to building one, I went with this set.

    Our billet uppers are CNC machined from solid billet 7075-T6 aluminum which is 70% stronger than the commonly used 6061 aluminum and finished with milspec hardcoat anodize to a surface hardness of 60 Rockwell. The precision machining on our our billets are well known in the industry and we are excited to introduce our uppers for your next rifle build. Our receiver set feeds GLOCK® 9mm magazines. Features: A4 Feed Ramps 7075 Billet Aluminum Upper and Lower are proprietary  Mil Spec Hardcoat Anodize Threaded bolt catch screw Threaded retainier screw for take down pin Ambidextrous Bolt Release Flared magwell Compatible with short throw saftey selector Tensioning screw for proper upper and lower fit Zinc-plated extractor and last round hold open lever Last round bolt hold open on an empty magazine Lower receiver accepts 9mm, .40 S&W and .357 SIG GLOCK® magazines Slick side upper receiver with appropriately sized ejection port and no forward assist or dust cover Accepts aftermarket Glock® 9mm double stack magazines. We recommend using factory Glock® magazines Weight - Upper receiver 7.7oz Lower receiver 12.4 oz Please NOTE: Our lower receiver will not fit with most upper receiver

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    • tonyjr
      Senior Member
      • Nov 2015
      • 1448

      Considering building one . Is there a good book on building ?
      life member - CRPA and NRA
      All ways listen - after you can say I new that

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      • saber
        Senior Member
        • Feb 2003
        • 696

        Comment

        • tonyjr
          Senior Member
          • Nov 2015
          • 1448

          Thanks , I ordered 2 books - one on ebay and a different one from
          amazon .
          life member - CRPA and NRA
          All ways listen - after you can say I new that

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          • metalcruncher
            CGN/CGSSA Contributor - Lifetime
            CGN Contributor - Lifetime
            • Sep 2016
            • 306

            Question to the resident AR-9 experts.
            I was having multiple problems on my AR-9 build. Finally have the kinks worked out and had a great day at the range.
            One problem was failure to eject. Based on this thread and other information on the internet, I bend the ejector in my vice and reinstalled it with the ejector closer to the BCG. At the range, 100% perfection.
            Yet, when I pull back the charging handle (and BCG) slowly, I feel the BCG nudge the ejector as it passes by.

            So, is my ejector too close to the BCG? Or based on the performance today, should I leave it as is?

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            • loademup
              Member
              • Feb 2016
              • 433

              Yet, when I pull back the charging handle (and BCG) slowly, I feel the BCG nudge the ejector as it passes by.

              So, is my ejector too close to the BCG? Or based on the performance today, should I leave it as is?
              Opinion, bend it a tad the other way so the ejector does not nudge the BCG. Try also to keep the ejector parallel as much as possible to the BCG with out touching it.

              When I tuned the ejector on my AR 9mm, I did it gradually bit by bit testing the ejecting each time until the cases (dummy rounds) briskly flipped away from the rifle. Before that, the ejection was much weaker with the rounds just dribbling out of the ejection port. The bending was such a minute change, but made all the difference in the world. Off course, a final field test proved everything was working perfectly with no spent cases failing to eject and jamming up the rifle.
              Last edited by loademup; 04-05-2019, 4:13 PM.

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              • metalcruncher
                CGN/CGSSA Contributor - Lifetime
                CGN Contributor - Lifetime
                • Sep 2016
                • 306

                Upon further review, the hammer itself is what nudges the BCG. When you look at the BCG from the magwell, my ejector wasn't touching at all. I've cycled the charging handle numerous times now and see the ejector running in the BCG slot close enough yet not touching to get the spent cartridges out.

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                • 97F1504RAD
                  Calguns Addict
                  • Dec 2008
                  • 6315

                  What trigger are you using?

                  Comment

                  • metalcruncher
                    CGN/CGSSA Contributor - Lifetime
                    CGN Contributor - Lifetime
                    • Sep 2016
                    • 306

                    AR-STONER Enhanced Trigger Group AR-15, LR-308 Small Pin .154" Single Stage from Midway. CMMG lower parts kit.

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                    • 97F1504RAD
                      Calguns Addict
                      • Dec 2008
                      • 6315

                      I know some triggers do have issues with 9mm PCC builds. CMC makes one specifically for these builds in case ur interested.

                      Comment

                      • Psychbiker
                        Senior Member
                        • Jul 2009
                        • 1671

                        Any experience with Torkmag glock block adapter? I have a few lowers I'd like to use one for a 9mm build.

                        Few of the glock adapters out there are the same price of a NFA 9mm dedicated glock lower.

                        Comment

                        • sigstroker
                          I need a LIFE!!
                          • Jan 2009
                          • 19143

                          Originally posted by Psychbiker
                          Any experience with Torkmag glock block adapter? I have a few lowers I'd like to use one for a 9mm build.

                          Few of the glock adapters out there are the same price of a NFA 9mm dedicated glock lower.
                          Not sure I like the idea of having to cut up Glock mags in order to work. It might limit you as far as using non-Glock mags. Of course, if you want to use it in a RAW or M16, you don't want to buy a different lower. Otherwise I'd be more inclined to get a 9mm-specific lower for Glock or Colt mags. PSA lowers are usually under a hundred bucks.

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                          • Nobody Here
                            Banned
                            • Jul 2019
                            • 1

                            Fantastic thread !!

                            The competition PCC market has really exploded with stuff.


                            OP was ahead of his time for sure !!


                            _

                            Comment

                            • ugimports
                              Vendor/Retailer
                              • Jun 2009
                              • 6250

                              Reviving old thread because I didn't want to read 26 pages and my search terms didn't turn up an answer.. Can you use a BCG designed for Colt Mags with Glock Mags?
                              UG Imports - Fremont, CA FFL - Transfers, New Gun Sales
                              Closure Schedule: http://ugimports.com/closed
                              web​ / email / vendor forum

                              I AM THE MAJORITY!!!

                              Amazon Links Posted May be Paid Links

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                              • bigpig1
                                Senior Member
                                • Oct 2007
                                • 524

                                I believe not. Needs to have a certain ramp on the bcg for the glock mags. But others can chime in. Mine takes glock mags and I remember having to buy a bcg that's compatible with it. I believe I got the JP bcg for glock mags

                                Sent from my SM-G960U using Tapatalk
                                Last edited by bigpig1; 12-18-2019, 10:04 AM.

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