Trijicon ACOG 3.5×35
What’s Included | Specs | Top Mount | Pictures | Restrictions
The ACOG needs no introduction—its bombproof construction and time-tested reliability have solidified it as a staple within the industry. The 3.5×35 model offers significantly increased eye relief over the more common 4×32 at the cost of some magnification, a little FOV, and a larger footprint. We find these to be good trade-offs for those who don’t like the tight eye box of the 4×32 model but still want that ACOG reliability.
This is the TA11 model, which is powered by Fiber Optics and Tritium. It provides battery-free illumination that can last well over a decade. Unlike the LED model (TA110), the TA11 only features a rear mounting boss, slightly limiting your top dot capabilities, so there are trade-offs to the battery-free system. You can read more about that in the Top Mount Compatibility section below.
WHAT’S INCLUDED
- 1x Trijicon ACOG 3.5×35 Riflescope
- 1x Thumbscrew Flattop Adapter
- 1x LensPen
- 1x Owners Manual
- 1x Warranty Card

We include an 8.5″ x 11″ rifle zero target with every rifle optic. We recommend a 100-meter zero for the ACOG on most 5.56 rifles.
How To Shoot Part 2: Zeroing – Video – T.REX ARMS
SPECS
FEATURES
- Longer eye relief than standard 4×32 models allows for a less strict eyebox and more flexibility with mounting location.
- High-quality glass and multi-coated lenses maximize light-gathering capabilities and a clear field of view with zero distortion
- Able to withstand recoil from a .22LR to a .50BMG and everything in between
- Performs in extreme cold and heat with dry-nitrogen filled housing that mitigates fogging
- Passes U.S. Military drop test requirements
- Minimal moving parts, creating a nearly indestructible sighting system
- Exceptional waterproofing that exceeds military standards
- Forged from 7075-T6 aircraft aluminum
Made in the USA.
View the Horseshoe Reticle HERE.
TECHNICAL SPECIFICATIONS
Dimensions (L x W x H) | 8 in x 2.1 in x 2.9 in (203.2mm x 53.34mm x 73.66mm) |
Weight | 17.6 oz. (498.95g) |
Magnification | 3.5x |
Objective Size | 35mm |
Reticle Color | Red |
Bullet Drop Compensating (BDC) | Yes |
Caliber | .223 / 5.56 |
Bindon Aiming Concept™ (BAC) | Yes |
Illumination Source | Fiber Optics & Tritium |
Adjustment | 3 clicks per inch (@ 100 yds) |
Eye Relief | 2.39 in. (60.71mm) |
Exit Pupil | 0.39 in. (9.91mm) |
Field of View (degrees) | 5.5° |
Field of View (feet) | 28.9 ft. @ 100 yds (9.63m @ 100m) |
Mount | Flattop Thumbscrew Mount (TA51) |
Housing Material | Forged Aluminum |
Finish | Matte Black |
TOP MOUNT COMPATIBILITY
Aimpoint T2 / Micro | Aimpoint Acro | Trijicon RMR | |
3.5×35 LED (TA110) | Aimpoint Micro Middle Mount for ACOG Works on either mounting boss, but the rear mount is not an ideal placement for Acro-style optics. | Aimpoint Acro Middle Mount for ACOG Works on either mounting boss, but the rear mount is not an ideal placement for Acro-style optics | RMR Rear Mount for ACOG Works on either mounting boss. |
3.5×35 (TA11) | Aimpoint Micro Middle Mount for ACOG Rear only, not ideal placement for T-2 style optics. | Aimpoint Acro Middle Mount for ACOG Rear only, not an ideal placement for Acro-style optics. | RMR Rear Mount for ACOG |
4×32 LED (TA02) | Aimpoint Micro Front Mount for ACOG | Aimpoint Acro Front Mount for ACOG | RMR Front Mount for ACOG |
4×32 (TA31F) | Not Recommended | Not Recommended | RMR Rear Mount for ACOG |
PICTURES


RESTRICTIONS
This product is restricted by International Traffic in Arms Regulations (ITAR) and cannot be shipped outside of the USA.