Description
There's a reason the LaRue LT100 shows up on so many ACOG-equipped rifles around the world. It takes your Trijicon ACOG or VCOG and gives it a rock-solid quick-detach platform that clamps down on any Picatinny rail with confidence. The whole thing is precision-machined out of bar-stock aluminum and finished in matte black anodizing, so it's tough, corrosion-resistant, and won't throw glare when you least want it. One thing worth knowing up front: the LT100 places the QD levers on the left side of the mount, which keeps them out of the way for most right-handed setups.
What the LT100 QD Mount Does Best
The heart of this mount is LaRue's two-lever Speed Lever system. Flip the levers, pull your optic, and when you put it back on it returns to zero, no re-confirming needed. That's the whole appeal here. Folks who run this mount consistently report their groups landing right back where they zeroed after pulling and remounting the optic multiple times, which is exactly what you want if you swap between optics or need to fold down to backup irons in a pinch. It locks up tight under recoil too, so nothing walks around on you during a string of fire.
Setting Up Your LaRue ACOG Mount
Installation is straightforward and LaRue includes what you need to do it right. Take your time reading through the instructions and pay attention to setting the lever tension properly, since that's the key to consistent return-to-zero performance. The included blue Loctite is there to keep your ACOG's mounting screws secured to the mount itself. Once it's dialed in and torqued down, this thing tends to become a set-and-forget part of your build.
Bottom line, if you've got an ACOG or VCOG and want a dependable way to run it quick-detach, the LT100 has earned its reputation the hard way and keeps showing up on serious rifles for good reason.
Key Specifications
- Manufacturer: LaRue Tactical
- Manufacturer Part Number (MPN): LT100
- Model: ACOG
- UPC: 810143180398
- Compatible Optics: Trijicon ACOG & VCOG
- Mounting Platform: Picatinny Rail
- Attachment: LaRue Speed Lever (Quick-Detach)
- Lever Configuration: Two-lever, left side
- Return to Zero: Yes
- Material: Bar-Stock Aluminum
- Finish: Matte Black Anodized
- Color: Black
- Weight: 3 oz
What’s Included
- LaRue Tactical LT100 ACOG QD Mount
- Replacement mounting screws
- Wrench
- QD adjustment wrench
- Vial of blue Loctite
- Installation instructions
Frequently Asked Questions
Which optics does the LaRue LT100 mount fit?
The LT100 is built for Trijicon ACOG and VCOG optics and clamps onto standard Picatinny rails. It's designed around the full-size ACOG footprint, so it will not fit the Mini-ACOG. If you're running a standard ACOG or a VCOG, this is the mount made for it.
Does the LaRue LT100 really return to zero after removing the optic?
Yes, and that's its main claim to fame. The locking LaRue Speed Lever lets you pull the optic and reinstall it without losing zero, provided you set the lever tension correctly during installation. Users regularly report their zero holding within about 1 MOA after repeated removal and remounting.
What side are the QD levers on the LT100?
The LT100 has its two QD levers on the left side of the mount. This keeps them tucked out of the way for most right-handed rifle setups. LaRue makes mirror-image and right-side lever versions under different part numbers if you need a different configuration.
How do I install the LaRue LT100 mount correctly?
The mount ships with replacement screws, a wrench, a QD adjustment wrench, blue Loctite, and instructions, so you have everything needed to do the job. The most important step is setting the QD lever tension properly, since that's what guarantees consistent return-to-zero. Read through the instructions and take your time dialing it in before heading to the range.





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