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  • caribbeing
    Member
    • Dec 2008
    • 123

    Am I normal?

    I have just completed my first AR-15, and I officially have a bad case of the BRD.

    Ill run through the specs real quick.
    BCM 16" midlength upper with a GFCH, phantom comp, MOE handguard and LMT rear irons.
    Lower is JD machine with IAC roll marks, bullet button, DMPS LPK, Tangodown grips and a UBR stock.
    The magazine is an old 10/30 USGI

    The build itself went fairly smooth but i did run into a few problems - most of which were related to the DMPS LPK which in hindsight i really regret purchasing. the first problem was the roll pin for the mag catch. What a PITA that was. I almost wonder if it was the wrong size it was that hard to install. The second was a problem that I posted about earlier which was the safety selector switch was out of spec and would stick in the FIRE position. I got a replacement switch and the glendale gunshow and everything was working fine again.

    Took it out to range yesterday to see if it went bang and to zero the iron sights. 175 rounds without any issues. Having never fired an AR before the sprong! of the buffer spring made me laugh a bit when i first heard it, but i got used to it pretty quick. The trigger is not really to my liking as its really stiff and has a bunch of travel before it breaks, but again i blame the cheapo DMPS kit for that, and maybe it will get better as time goes by.

    So now the new problem. When I zeroed the iron sights I had to crank the windage almost all the way over to the right side. It ended up shooting straight but the rear sight looks weird cranked all the way over. I was getting about 4-5" groups at 100yds which isnt too bad considering the heavy trigger and im bit rusty. But my question is "Is this normal?" The front sight post doesnt appear to be canted but im not too sure. Any advice is appreciated.

    TLDR - is it normal to have my rear sights adjusted all the way over?
  • #2
    joelogic
    Calguns Addict
    • May 2008
    • 6592

    No this is not normal. Could be the front sight or your sight picture. Have someone else shoot it and see if you get the same results. Then post some pics of your front sight.
    Micro/Mini Reflex Red Dot Sight Mount for the M1, M1a/M14 platform

    Comment

    • #3
      dieselpower
      Banned
      • Jan 2009
      • 11471

      Send it back to BCM. Unless you were zeroing in a hurricane...

      At 100 yards my peep is 1 click left. CMMG upper with an Armalite 16 HBAR I installed my self.

      Comment

      • #4
        GoingPro
        Senior Member
        • Oct 2008
        • 1451

        i am glad you posted this.....my troy BUIS seems to be too much to the left....
        sigpic

        Comment

        • #5
          Don29palms
          Senior Member
          • Jun 2010
          • 1829

          Originally posted by dieselpower
          Send it back to BCM. Unless you were zeroing in a hurricane...

          At 100 yards my peep is 1 click left. CMMG upper with an Armalite 16 HBAR I installed my self.
          +1 Something is definitely wrong.
          Using gun control to stop crime is like trying to put out a fire with gasoline!
          You don't have to get permission to exercise a RIGHT. If you have to get permission or can be told no by the government it is no longer a right. IT IS A PRIVILEGE!
          AR-15 ASSEMBLY CHECK LIST FOR BUILDERS

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          • #6
            gvbsat
            Senior Member
            • Jan 2010
            • 1003

            Did you buy the upper complete? Or did you drill the holes yourself for the front sight base?

            Comment

            • #7
              GoingPro
              Senior Member
              • Oct 2008
              • 1451

              i took my rifle out and checked, its not that far to the left like yours is all the way to the right.....
              sigpic

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              • #8
                caribbeing
                Member
                • Dec 2008
                • 123

                sight picture

                Could be the front sight or your sight picture.
                noob here - by sight picture you mean how i am looking through the sight? ie head position and cheek weld, yes?

                Did you buy the upper complete? Or did you drill the holes yourself for the front sight base?
                I bought it as a complete upper.
                Last edited by caribbeing; 11-23-2010, 2:29 PM.

                Comment

                • #9
                  caribbeing
                  Member
                  • Dec 2008
                  • 123

                  Then post some pics of your front sight.




                  Comment

                  • #10
                    that guy
                    Member
                    • Jun 2009
                    • 201

                    There is another possibility...

                    Have you considered that the rear irons are the "issue". It would appear from your photo the rear sight assembly is shifted to the left, requiring the rear sight to be adjusted to the right to compensate. Have you measured the rear irons to see if they are centered on the top rail?

                    I'd check to see if the problem was with the add-on rear irons or their installation before assuming the upper assembly is the problem.

                    Good luck.
                    "don't be that guy"...
                    Originally posted by tenpercentfirearms
                    You are "that guy". "That guy" that takes things to far and ruins them. Your thread is a pathetic, unoriginal copy. Don't be "that guy". I predict your thread goes away. You are "that guy".

                    LOL! Your thread is already gone. You are "that guy"!

                    Comment

                    • #11
                      Droppin Deuces
                      Calguns Addict
                      • Jan 2010
                      • 5969

                      Loosen the rear sight and wiggle it to make sure it's sitting flat. Sometimes things don't always settle right into place until you do that.
                      sigpic

                      Comment

                      • #12
                        olhunter
                        CGN Contributor
                        • Dec 2008
                        • 3707

                        You're sight is not mounted evenly. Look at the edges and sides. They have uneven overhang and it is canted slightly. Loosen it up and line it all up evenly and carefully. If there's no way to adjust that, your sight is bad. Or get a bigger hammer.

                        Last edited by olhunter; 11-23-2010, 3:17 PM.
                        It cannot be inherited, nor can it ever be purchased.
                        You and no one alive can buy it for any price. It is impossible to rent and cannot be lent.
                        You alone and our own have earned it with...Your sweat, blood and lives. You own it forever.

                        The title is....."United States Marine".


                        sigpic

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                        • #13
                          caribbeing
                          Member
                          • Dec 2008
                          • 123

                          I'd check to see if the problem was with the add-on rear irons or its installation before assuming the upper assembly is the problem.




                          I guess the smart thing to do is replace the LMT with a magpul MBUS that i have and take it out again to see if rear sight is the issue.

                          Comment

                          • #14
                            DULLYJAY
                            Senior Member
                            • Oct 2005
                            • 1022

                            This also can happen if barrel is over or under torq.
                            "Betta get yours, cuzz I got mine!" 2Pac
                            + 1000 post CGN V1.0 Alumni

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                            • #15
                              sevensix2x51
                              Veteran Member
                              • Sep 2009
                              • 3835

                              the front sight looks canted in this picture, at least to my eyes...


                              how did you go about changing that flash hider? as in, how did you brace the upper?

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