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Need Advice-Holosun Red Dot

buddybbuddyb Member Posts: 5,164 ✭✭✭✭

Bought a Glock model 40,10mm to hunt with around home.Never used a red dot but I decided to put a Holosun 507 on the Glock.I am sure I am doing something wrong trying to get it sighted in,but I don't know what. I was going to start at 10 yards and work my way back to about 20 then 40.I ran out of elevation at 10 yards and was still about a foot low.Trying not to waste any more ammo than I have to.Any suggestions?


  • shootuadealshootuadeal Member Posts: 5,196 ✭✭✭✭
  • WarbirdsWarbirds Member Posts: 16,823 ✭✭✭✭
    edited September 1

    I am a Trijicon loyalist, but know many shooters with Holosun optics.

    It sounds to me like your elevation is not adjusting at all. I don’t know another way to explain your comment

    “I ran out of elevation at 10 yards”

    Let me know how their warranty process works, it sounds like you’re about to find out.

  • William81William81 Member Posts: 24,235 ✭✭✭✭

    Is this is a Gen 4 or 5 Glock 20 and the 507C is mounting directly to the slide without any adapter plate ?

    Another thought, if you are new to using a dot sight, it is really different from using iron sights. I have seen people shooting low when they shoot not using a rest. They had a tendency to cant the gun down until they get more accustomed to using the dot.

    I have a couple Holosun products and have not had any issues with them. I know they have decent customer service per a buddy that ended up with issues and they replaced his.

  • OakieOakie Member Posts: 40,518 ✭✭✭✭

    How do you have it mounted??? Sounds like your canting down as mentioned. Are you resting the gun and if so, on what??? I have several different types of red dots and never had a problem with them. It did take some getting use to.

  • Kevin_LKevin_L Member Posts: 1,139 ✭✭✭✭

    Spot on. When I put a red dot on my Buckmark, I instinctively shot low. It took a while to get comfortable keeping the dot in the center of the view.

    "...the right of the people to keep and bear Arms, shall not be infringed." 🍺 🇺🇲 🍔

  • Mr. PerfectMr. Perfect Member, Moderator Posts: 65,930 ******

    Recommend you only shoot at things on the ground.

    Some will die in hot pursuit
    And fiery auto crashes
    Some will die in hot pursuit
    While sifting through my ashes
    Some will fall in love with life
    And drink it from a fountain
    That is pouring like an avalanche
    Coming down the mountain
  • buddybbuddyb Member Posts: 5,164 ✭✭✭✭

    The mount is Glock MOS so its pretty solid.I was shooting off a rest ,but that still does not mean It wasn't something I was doing.The kick was I mounted a $50. red dot on my Ruger Mk3 at the same time and in 5 minutes it was sighted in,tearing the center out of the target. I dont want to go cheap on the Glock so I just might go iron sights

  • montanajoemontanajoe Forums Admins, Member, Moderator Posts: 57,433 ******

    Shim plate under base and start over.

  • drobsdrobs Member Posts: 22,497 ✭✭✭✭

    Good luck, I picked up a Palmetto State Armory Micro Dagger slide with Holosun 407k red dot on it.

    I'm about 8 mags into shooting with it and still can't figure it out. I haven't tried sighting it in yet. Instead am trying to find out where it is on paper.

  • redhawkk480redhawkk480 Member Posts: 2,447 ✭✭✭✭
    edited September 3

    last year i purchased a Dagger Compact from PSA ( Palmetto State Armory ) it's their (PSA) version of a Glock 19 gen 3 under license if i remember correct ,, it came cut for a reddot, so i put this one on it,,  Holosun HE507C-GR-X2-ACSS,

    purchased from Primary Arms

    just look under, optics >> red dots with ACSS <<

    sorry about the side ways pictures they where upright on my computer

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