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How to Choose an Optic Mount: Stop Wasting Money on Junk That Loses Zero

Your optic is only as good as the mount holding it. A $1,500 LPVO on a $40 airsoft-grade mount will lose zero the first time you bump a door frame. A $300 red dot on a bombproof mount will still be running when the rifle looks like it went through a wood chipper.

This 2025 guide breaks down exactly what separates a lifetime mount from a range-toy, so you never have to re-zero optics mid-match—or mid-hunt—again.

The 4 Non-Negotiable Rules of a Solid Optic Mount

  1. Repeatable ZeroMust return to zero after removal/install. Obviously, serious shooters aren’t taking optics on and off just for the sake of it, but it inspires confidence knowing that zeroes are retained by quality mounts. Of course, one should be sure to reinstall an optic on the same section of rail as it was before to ensure consistent mounting variables.
  2. No Cant or FlexThe mount itself must be rugged and unbending. If there is any flex in the mount, one should not trust the unit’s ability to retain zero, especially on higher caliber firearms. This is especially true if materials are warped or inconsistent in a way which acts on the scope’s positioning. This can introduce cant or other inconsistencies to the mounted optic, complicating one’s sight picture and hindering accuracy potential. For best results, one should choose a mount made of rugged materials and produced by a quality manufacturer.
  3. Proper Eye Relief & HeightThese factors matter more than most shooters think. One should strive to pick a mount which sits at a comfortable operating height for as many shooting positions as possible. This is to say that it is comfortable while in common shooting positions like standing, sitting, and prone. Of course, the eye relief should also be set comfortably so the scope is usable and viable in multiple shooting positions as well. Find a height and eye relief distance that works best for you.
  4. Torque Specs That Actually MatterHand-tight is not a consistent and repeatable torque value across the board. One should always check the torque specs of their mount AND the torque rating of their scope tube. Adhering to these specs and guidelines will ensure that the scope stays put while mounted and is not broken due to excessive torque. Shooters can employ tools like the Wheeler Fat Wrench to ensure that proper torque is achieved with their firearm accessories.

Ignoring these important factors will ultimately hinder your potential performance with your firearm. Why risk equipment hardship at the range, during a match, or in the field?

Mount Types Explained (With Real-World Rankings)


Mount Style Best For Height Options Weight Penalty 2025 Top Picks (True Shot Tested) Price Range
QD Lever Low-Profile LPVO / Red Dot – Duty & Competition 1.5" – 1.93" Light Scalarworks LEAP, Geissele Super Precision, American Defense QD $140–$320
Cantilever One-Piece AR-15 LPVOs (forward bias) 1.5"–1.7" Moderate Nightforce Ultralite Unimount, Reptilia AUS, Spuhr QDP $180–$450
Side-Mount (AK/SKS/Scout) Combloc rifles Fixed or 30mm Heavy RS Regulate AK-300 series, Midwest Industries AKG2 $140–$220
Riser / Quick-Detach Red dots, holographic sights, night vision use 1.93", 2.26", and other taller mounts over absolute height Light Unity FAST series, Arisaka Offset, Badger Ordnance C.O.M.M. $90–$280
Traditional Rings + Base Bolt guns & precision Any Varies Seekins, Warne, Nightforce XTRM rings + 20 MOA base $100–$300

Critical Features You’re Probably Overlooking

Return-to-Zero (RTZ) Levers vs Throw-Lever Copycats

Real QD levers (Scalarworks, ADM, Geissele) use cross-bolt tension + precision machining. Cheap Amazon levers use a cam that loosens under recoil. Cheap out and expect to lose zero or have your optic moving around on the rail.

Cantilever Throw – How Far Is Too Far?

Most ARs need 1.5–2.5" of forward throw for correct eye relief on 1-8x or 1-10x LPVOs. Too far and you lose cheek weld. Too short and you’re craning your neck like a turtle.

Height Wars: Absolute Co-Witness vs Lower 1/3 vs 1.93" And So On

Here are some of the most common heights associated with red dot and holographic type sights. Of course, other offerings exist and different heights can be achieved by combining mounts, bases, risers, and even certain optics. Some optics feature built-in heights while others rely entirely on mounts.

  • Absolute – Dot sits in bottom of iron sights. Great for backup irons, slower transitions.
  • Lower 1/3 – Dot sits in upper third. Fastest for both-eyes-open shooting.
  • 1.93"–2.26" – Night vision height ( Unity FAST, Badger C1). Ideal if you run nods.

Rail Space & Weight Reality Check

A 10-oz mount on a 7-lb rifle matters. A 10-oz mount on a 12-lb DMR? You’ll never notice. It shouldn’t surprise anyone to say that once stuff is added to a firearm, like a rifle, it gets heavier. Naturally, optic setups can add significant weight to a rifle in addition to other accessories and components like flashlights, lasers, grips, magazines, stocks, and more. Of course, adding more stuff also takes more rail space and real estate on the firearm.

How does this relate to optic mounts? Well, materials and things like form factor and purpose apply. Naturally, bulky and large mounts designed to be robust will outweigh and dwarf slimline, lightweight offerings. This holds true for scopes, red dots, holographic sights, and magnifiers alike. Mounting solutions are typically tailored towards specific use cases and purposes, as such they possess qualities reflective of these philosophies.

Platform-Specific Mount Rules


Platform Must-Have Mount Style Avoid At All Costs
AR-15 QD cantilever (1.5–1.7" height for LPVO) or solid non-QD offerings from companies like Spuhr, Reptilia, etc. Two-piece rings, cheap Chinese QD.
AK Pattern RS Regulate modular or Midwest side rail or Texas Weapon Systems Dog Leg Mount. Cheap, low quality mounts which clamp to the side rail or dust cover welded solutions.
Bolt Guns 20 MOA one-piece + quality rings. Weaver-style two-piece on magnum calibers.
SCAR / Tavor Factory QD or aftermarket reinforced.

Anything that clamps only the top rail - you will want a robust mount that engages with the slots of the 1913 rail in addition to providing rugged clamping force.

PCC (9mm) Lightweight riser ( Geissele, Arisaka). Heavy cantilever you don’t need. Keep the platform light and maneuverable.

Torque Specs Cheat Sheet

The following values represent general torque specs. While these offer a good rule of thumb, one should ALWAYS consult the literature that accompanies their optic or mounting solution. As mentioned earlier, optics like scopes have their own torque ratings to consider as far as the recommended amount of torque for their optic body. Exceeding this amount can result in a scope tube being crushed or threads and mounts incurring damage.The following values represent general torque specs. While these offer a good rule of thumb, one should ALWAYS consult the literature that accompanies their optic or mounting solution. As mentioned earlier, optics like scopes have their own torque ratings to consider as far as the recommended amount of torque for their optic body. Exceeding this amount can result in a scope tube being crushed or threads and mounts incurring damage.

  • Cross-bolts (mount to rail): 15–18 in-lbs (Picatinny) / 25 in-lbs (M-LOK QD)
  • Ring cap screws: 15–18 in-lbs (aluminum) / 25 in-lbs (steel rings)

Use a FAT wrench. “German torque” (gutentight) cracks rings and strips rails.

Before Installation and Torquing

Often overlooked aspects of optic mounting and other firearm accessories comes in the form of ensuring that screws are clean before installation and that threadlocker compounds are used properly. Often times, the screws accompanying items like optic mounts and other goods are far from pristine. In most cases, these screws are slathered in machine oil and other gunk which should be removed to ensure proper thread engagement. If there is interference with thread engagement, the screws won’t “bite” properly. Once this gunk is cleaned, threadlocking compound can be applied properly. Some screws will even come with compounds like Loctite from the factory. These types of screws are ready to go from the get-go and reflect the manufacturer’s desire for their product to be torqued and retained properly. 

Speaking of threadlockers, these are perhaps some of the most incorrectly used compounds available to shooters and the general public. Without getting too far into the weeds, there are different types of threadlockers available in addition to times where its use is not necessary. There are many cases of shooters using the improper compound for their screws, preventing an optimal seal. Compounds are optimized for various screw sizes and come in a litany of strengths, ranging from semi-permanent to permanent. Of course, there is also such a thing as too much compound. Applying too much can gum up threads and even seep into unintended areas. In short, when dealing with optic mounts, one should consult the manufacturer’s literature and ensure that they follow guidelines for optimal installation and performance.

Final Decision Matrix (Pick One)

Your Use Case Buy This Mount
Duty / Home Defense AR American Defense ADM Delta or Scalarworks LEAP/07
Competition 3-Gun / PRS Gas Gun Geissele Super Precision SOPMOD or Spuhr QDP
Night Vision + LPVO Unity FAST LPVO mount (2.05" or 2.26")
AK with Side Rail RS Regulate AK-303 + lower (300 series)
Precision Bolt Gun Nightforce X-Treme or Seekins 20 MOA one-piece

Bottom Line

In summation, an optic is only as good as its mount. Get something quality from the get-go and you will be met with success. Cheap out and you are likely to encounter disappointing failure. Whether you are looking to buy ammunition or purchase optics, True Shot Ammo has you covered. With quality offerings from Aimpoint, EOTech, and Holosun, we have a wide range of offerings for every budget. We have also recently started carrying mounts from companies like Unity Tactical which provide rugged mounting solutions for popular optics on the market. As always, we hope you found this blog informative and helpful. See you at the range.

Kyle Read
AUTHOR INFORMATION

Kyle Read

As founder of True Shot, Kyle's vision and determination have grown True Shot from his garage to being an Inc 5000 company in 2021, 2022, 2023, and 2024 with growth in excess of 1,400%. His mission is for True Shot to become the best place to buy ammunition and accessories in America. In addition to his professional pursuits, Kyle has a passion for international travel, Formula 1 racing, and the gym. Kyle and his wife are currently raising their three boys in Phoenix, AZ.

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