Here we have the 3 best red dot sight for B&T APC9 or GHM9 (Works for all pistol calibers)

They work great for 9mm sub gun and it fun to shoot with them.

Best Optic Picks for BT GHM9 and APC9

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Holosun 510C - Best Overall

bt ghm9 holosun 510c

Why To Slap On A Holosun ? - If you are new to pistol caliber rifles, the Holosun 510C is the best durable entry level reflex optic you can pair your BT GHM 9 before you move onto something different.

Multi-Reticle Modes - Cycle between 3 reticle types as applications change

  • 2 MOA Center Dot
  • 65 MOA Ring
  • 65 MOA Ring + 2 MOA Center Dot

Large Lens For Faster Shooting – Unlimited eye relief, large window. Stay on target while on the move, and quickly acquire targets with max situational awareness

Extended battery life – Lasts extremely long for years, knowing how many years it can last becomes pointless

Mount on any M1913 Rail – Mount it on BT GHM's top rail at any position of your choice

Solar Power Back Up - Sight keeps going powered by solar panel that collects natural ambient lights.


  • Magnification - 1X
  • Reticle - 2 MOA + 65 MOA Ring
  • Adjustment - 0.5 MOA / Click
  • Brightness - 10 DL&2 NV
  • Battery Life - 50,000 hrs / 20,000 hrs circle dot
  • Construction - Titanium frame
  • Submersion - IP67
  • Body Dimension -3.3" X 1.68" X 1.78"
  • Window Size - 1.26" X 0.91"
  • Weight - 4.94 oz
  • Aimpoint Micro - Operators' Pick

    bt ghm9 with aimpoint micro

    Why Most Pros Use Aimpoint - The Aimpoint Micro is the best combat proven red dot sight on the block (T1/2, H1/2). It's tough, durable and many professionals around the world trust and use it on various firearms

    Built like a tank -  7075 T6 aluminum protects the internal and external to hold zero and other physical abuses

    Low Profile - Highly recommended for a low profile BT GHM or APC9 setup that fits in a small bag

    Insane battery life - It lasts so long that the battery life seems infinite. You never have to worry about the battery running out, it's always ready.

    Accepts Various Mounts - Use any Aimpoint Micro footprint mount to suit your tactical subgun needs


    • Magnification - 1X
    • Reticle - 2 MOA Dot
    • Adjustment - 0.5 MOA / Click
    • Brightness - 8 DL&2 NV (Features MOTAC)
    • Battery - CR2032, 40000 hours
    • Construction - 6061 T6 housing + Anodized
    • Submersion - IPX7
    • Body Dimension - 62.7mm X 38.1mm X 38.6mm
    • Window Size - 1X20mm
    • Weight - 5.1 oz

    EOTECH EXPS3 - Best Large FOV Holosight

    bt ghm eotech exps3 fde

    Why Use The EOTech? This operator grade sight that works great and looks slick on the BT GHM subgun. It's everyone's favorite field grade holographic sight on the market.

    Large Field Of View - Use it just like a reflex dot sight and aim with both eyes open and shoot around tight spaces

    Additional Protection - External lens hood prevents external forces from impacting the main optic to further beef up the optic system

    CQB Holdover - Use the 68 MOA ring for fast close range holdover and target distance estimation

    Auto Shut-Down - At 8 hrs- programmable to 4 hrs (If forget to turn it off during transport)

    Raised Height - No riser mount needed. The sight sits at 1/3rd co-witness height for better cheek position for most shooters and clears over any iron sights.


    • Magnification: 1X
    • Eye Relief: Unlimited
    • Reticle Type: 2 MOA Red Dot + 68 MOA Ring
    • Brightness -  DL & NV (Features Auto Shut Off)
    • Turret : 0.5 MOA / Click
    • Battery: 1 CR123
    • Length: 3.1 inches
    • Weight: 4.7 oz

    Trijicon MRO Gen 2 - Large Window 

    bt ghm9 with trijicon mro 2 moa

    The Trijicon Miniature Rifle Optic (MRO) Gen 2 represents an upgrade from the original model, offering improved lens tint this time.

    Expansive Field of View - The MRO allows for more head movement behind the optic, ensuring that you can still acquire the reticle in various shooting positions, even in improvised or canted stances.

    Enhanced Situational Awareness - Its top adjustment turret design minimizes view obstructions on both the left and right sides of the optic, optimizing situational awareness.

    Eliminating the Tube Effect - The tapered body design of the MRO widens the forward field of view (FOV) while looking through the optic tube, eliminating the tunnel vision effect.

    Built for Durability - Machined from 7075 T6 aluminum alloy, one of the industry's toughest materials, the MRO can withstand substantial field abuse.

    User Feedback on the MRO - Users often compare it to an Aimpoint Micro but with a larger glass, highlighting its performance and versatility.


    • Magnification: 1X25
    • Eye Relief: Unlimited
    • Reticle Type: 2 MOA Red Dot 
    • Turret : 0.5 MOA / Click
    • Battery: 1 CR123
    • Length: 2.6 inches
    • Weight: 4.1 oz