Trijicon Acog M4a1 W Flat Top Adapt

Trijicon Acog M4a1 W Flat Top Adapt

Trijicon
MPN:
TA01NSN
UPC:
719307300538
$1,134.69
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Description

The Trijicon ACOG M4A1 with Flat Top Adapter is a battle-proven, fixed-power riflescope engineered for the demands of both military combat and civilian precision shooting — delivering fiber optic and tritium-illuminated clarity in any lighting condition without batteries.

  • Fixed 4x magnification optimized for M4/AR-15 engagement distances
  • Dual-illuminated reticle powered by fiber optics and tritium — no batteries required
  • Bullet Drop Compensated (BDC) reticle calibrated for 5.56 NATO trajectory
  • Flat top adapter included for direct Picatinny/MIL-STD-1913 rail mounting
  • Aircraft-grade aluminum alloy housing rated for extreme rugged conditions
  • Both-eyes-open design enables rapid target acquisition at close quarters

Who This Is For

The Trijicon ACOG M4A1 with Flat Top Adapter is ideal for AR-15 and M4-platform owners who demand a combat-ready, zero-battery optic that excels from CQB distances out to 600+ yards. Whether you're a competition shooter, a serious home defender, or a professional seeking a mil-spec optic trusted by U.S. Armed Forces, this ACOG delivers the speed, accuracy, and durability to perform when it counts most.

Trijicon ACOG M4A1 riflescope with flat top adapter – full profile view Trijicon ACOG M4A1 optic showing reticle and mounting hardware detail

Specifications

BrandTrijicon
ModelACOG M4A1 w/ Flat Top Adapter
Magnification4x
Objective Lens Diameter32mm
ReticleChevron BDC (5.56 NATO / .223)
IlluminationDual (Fiber Optic + Tritium)
Battery RequiredNone
Eye Relief1.5 in (38mm)
Field of View36.8 ft @ 100 yards
Housing MaterialForged Aluminum Alloy
MountingFlat Top / Picatinny Rail (MIL-STD-1913)
Weight9.9 oz (with mount)
Length5.8 in (147mm)
FinishMatte Black
Made InUSA

Frequently Asked Questions

What rifles is the Trijicon ACOG M4A1 compatible with?

The ACOG M4A1 with Flat Top Adapter is designed specifically for AR-15 and M4-platform rifles equipped with a flat top upper receiver and a MIL-STD-1913 Picatinny rail. The included flat top adapter ensures a secure, return-to-zero mount directly on the rail without requiring any additional hardware. It is optimized for use with 5.56 NATO and .223 Remington chambered rifles, though the optic itself can be mounted on any compatible Picatinny rail system.

How does the illumination work, and does it need batteries?

The Trijicon ACOG uses a dual-illumination system that requires absolutely no batteries. During daylight and bright conditions, a fiber optic cable collects and channels ambient light to illuminate the reticle. In low-light or no-light environments, a self-luminous tritium phosphor lamp keeps the reticle glowing for up to 15 years. This passive system ensures your optic is always ready — even if electronics fail — making it a preferred choice for military and law enforcement professionals worldwide.

Is the ACOG suitable for both close-quarters and long-range shooting?

Yes. The 4x fixed magnification and Bullet Drop Compensated (BDC) chevron reticle make the ACOG M4A1 highly versatile. The both-eyes-open shooting technique enables rapid CQB target acquisition at short distances, while the BDC reticle provides precise holdover references calibrated for 5.56 NATO ballistics out to 600 yards and beyond. This combination of speed and accuracy at varying distances is exactly why the ACOG has been the standard-issue combat optic for U.S. military forces for decades.