Eotech 555.A65 Review

Eotech 555.A65 holographic weapon sightThe Eotech 555.A65 Holographic Weapon Sight (HWS) is the AA battery version of the Eotech 553. The Eotech 553 was developed after extensive testing of various optical sights by United States Special Operations Command. USSOCOM standardized the Eotech 553.A65 red dot sight (the BLK refers to the black exterior finish) as its 1X close combat optic as the SU-231/PEQ (Model 553).  The SU-231/PEQ (Model 553) and its Eotech 555.A65 variant incorporate many additional features demanded by the SOPMOD Block 2 program. The Eotech 555.A65 features a deal ARMS throw lever mount with 7mm raised base to ensure compatibility with night vision equipment and co-witnessing of iron sights and has an increased, 66ft submersion rating for underwater operations. A 65MoA ring/1MoA dot reticle is employed for fast centring on targets in dynamic situations. The 1 MoA dot enables great accuracy out to the distance at which targets can be identified. To extend this range by several hundred metres an Eotech G23.FTS 3x magnifier can be mounted behind the HWS. This can be used with Aimpoint or Eotech sights and flips to the side to enable use of the HWS at close quarters.

The Eotech 555.A65 HWS employs the latest solid-state electronic technology. No less than 20 brightness levels enable the Eotech 555.A65 to adapt to any lighting conditions. The battery check indicator, up/down brightness scrolling and (programmable) auto shutdown are controlled by an on-board microprocessor. The electronics are protected by encapsulation in a shock absorbing resin compound.

Red dot vs holographic the holographic patterns are visible in any light, center instinctively regardless of weapon hold, and remain visible while sweeping the target area. Reticles are large and semi transparent to ensure the fastest possible engagement without obscuring the target.

The HWS utilizes a fighter jet style ‘Heads-Up Display’ (HUD) that eliminates the obstructions and restricted angle of vision associated with other types of unitary power sight. Eotech vs Aimpoint this is a key advantage. The controls do not protrude from the Eotech 555.A65’s streamlined housing and nothing obstructs the view of the target area. You keep both eyes open whilst shooting, ensuring full situation awareness and rapid engagement of emerging threats.

Partially obstructed Eotech sighting windowPartial obstruction of the window will not prevent aiming. In the unlikely event that the window is shattered the Eotech will remain fully functional! As long as you can see through any portion of the window, the entire aiming pattern will be visible on target and you can shoot accurately. Aimpoint vs Eotech the Aimpoint has better lens protection due to its excellent lens caps made possible by its tubular construction, however Eotech 555 lens caps are available from GG&G and will keep most dirt, snow and debris out of your Eotech.

The Eotech 555.A65 Holographic Weapon Sight has been tested by in the most extreme conditions and will perform consistently and reliably in any operational environment. It is proof against water, fog, shock and extremes of temperature.

The HWS has been subjected to military drop tests and consistently remained operational and held its zero. Other tests utilized a recoil simulator to subject the sight to 3,500 Gs of acceleration in under 0.5 milliseconds (this approximates to mounting on a .454 Casull handgun) as well as chambers simulating various environmental conditions.

The HUD is made of 3/16″ thick, three layer, shatterproof laminate glass for extreme durability. For additional protection a rugged ‘roll bar’ hood covers the optical components of the sight.

The Eotech 555.A65 does not project any radiation or give off any visible signature. Even Gen III night vision cannot detect any signature from this sight.

Eotech rear mounted nv buttonsThe HWS is fully compatible with all generations of Night Vision equipment and features no less than 10 night reticle brightness settings to cater for different NV equipment and conditions. A typical installation would involve a removable or swing out image intensifier behind the HWS but the Eotech 553.A65BLK can be placed behind NV devices without generating bloom and is highly suitable for use with head mounted NV, even with partial cheek-weld, offering the operator great flexibility in employment. NV use brings out the enormous advantage of the HWS concept, providing four times more field of view than an Aimpoint Comp M2 and ten, as opposed to four NV compatible brightness settings.

* All black unit
* Dual ARMS throw levers with 7mm raised base
* 66ft. submersion rating
* AA Batteries (lithium or alkaline). (if you prefer the CR123 Lithium battery order the otherwise identical Eotech 553.A65BLK as standardised by SOCOM)
* 65MOA ring/1MOA dot reticle pattern

Purchase an Eotech 555.A65 Holographic Weapon Sight from Brownells



* Optics: Transmission holography –  parallax free
* Magnification: 1x
* Eye Relief: Unlimited
* Length/Width/Height: 5.6″x1.8″x2.8″
* Weight: 1 lb., 13.6 oz
* Temperature: -40 to 150 F
* Waterproof: Submersible to 66 ft depth
* Sealing: Fogproof internal optics
* Color/Finish: Flat Dark Earth (non-reflective black on some small components) or Non reflective black with hard coat finish
* Adjustment (per click): 0.5 MOA (1/2″ at 100 yds)
* Adjustment Range: +/- 40 MOA travel
* Mount:  Quick release throw levers designed specifically for the Picatinny (MIL-STD-1913) mounting rail: Certain commercial variants of the MIL-STD-1913 rail specifications may not be compatible with the 555.A65/1 mounting assembly. The 555 base consists of (2) ARMS throw levers and is only adaptable to rails that properly accept the ARMS design.
* Certain commercial variants of the MIL-STD-1913 rail specification may not be compatible with the SU-231/PEQ (M553) mounting assembly.
* The SU-231/PEQ (M553) base consists of (2) ARMS® throw levers and is only adaptable to rails that properly accept the ARMS® design.
* Return to Zero: Repeatable to 1 MOA after re-mounting

Heads-Up-Display Window

* Optical Surfaces: Anti-glare coating
* Window Dimensions: 1.20″ x 0.85″ (30 x 23mm)
* Front Window Material: 1/8″ solid glass
* Rear Window Material: Shatter resistant laminate (3/16″ thick)
* Field of View (100 yds): 30 yds (28m) at a 4″ eye relief
* Standard Reticle: 65MOA circle with quadrant ticks with 1 MOA aiming dot


* Brightness Adjustment Range: 110,000:1 brightest to lowest
* Night Vision Brightness Range: 1000:1 with NV switch engaged
* Power Source: 2 x AA  batteries
* Battery Life: 1000 continuous hours with lithium AA: 600 continuous hours with alkaline AA batteries at nominal setting 12
* Brightness Settings: 30 settings with scrolling feature (10 settings for NV use)
* Auto Battery Check Indicator: Flashing reticle upon start-up
* Auto Shut-down: At 8 hrs- programmable to 4 hrs

Check the price of an Eotech 555.A65 at Brownells, a name you can trust.

If you purchase from Brownells I will be paid an affiliate commission.  This will help keep this site online and will not affect your purchase price.

This entry was posted in Eotech and tagged . Bookmark the permalink.