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SHOP NOWThis video reviews the Sig Tango 6 low power variable optic recently adopted by the US Army. The hosts compare it to the ACOG, evaluate its features on the range, and discuss durability tradeoffs.
The discussion opens with a comparison between older fixed-magnification optics like the ACOG and newer low power variable optics. The hosts focus on the Sig Tango 6, a 1-6x first focal plane LPVO that has been selected as the United States Army’s new optic. They note that Sig Sauer has recently secured multiple military contracts, including the M17 and M18 pistols, the Spear and Spear LT rifles, and now optics. The traditional ACOG rifle combat optic, a fixed 4x design, is being phased out in favor of the Sig Tango 6. The hosts frame the video around evaluating this newer variable-power solution and how it performs compared to the long-serving ACOG on modern carbines.
The hosts explain why LPVOs like the Sig Tango 6 are increasingly preferred. Variable magnification from 1x to 6x allows shooters to adjust for different engagement distances and positively identify targets at greater ranges. They describe this as a force multiplier for squads and fire teams, enabling more accurate and efficient engagements. At close range, a quick turn of the magnification ring brings the optic to 1x, providing a wide field of view and a bright reticle for fast shots. They briefly reference the Bindon aiming concept and shooting with both eyes open, but emphasize that the main advantage is the ability to transition seamlessly between close and distant targets without switching optics or relying on separate aiming methods.
The conversation shifts to tradeoffs between the Sig Tango 6 LPVO and the ACOG. One host notes uncertainty about the weight difference and points out that the LPVO has a larger footprint, which matters when carrying a rifle all day. ACOGs are known for exceptional durability, and they acknowledge that an LPVO is generally more vulnerable to damage from drops, even though the Tango 6 is still considered robust. The Army appears willing to accept this compromise in exchange for extended magnification and better integration with night vision. The Tango 6 offers multiple night vision illumination settings, allowing passive or active aiming through night vision devices. In contrast, ACOG users often rely more heavily on visible lasers, which can be seen by near-peer adversaries also equipped with night vision.
Before shooting, they describe the rifle and optic configuration. One host runs an LWRCI rifle fitted with a SureFire Warcomp three-prong muzzle device, a T-Rex Arms light extender to push the weapon light forward for reduced suppressor shadow, a SureFire pressure pad paired with a Modlite, and a hand stop. They then detail the Sig Tango 6’s reticle options. The issued military model uses the Direct View Optic reticle, branded as the Hellfire DVO, in a first focal plane configuration. This reticle is calibrated for a 62-grain projectile, aligning with common service ammunition such as M855 and M855A1. The reticle includes a BDC layout that resembles a simplified Christmas tree, designed to provide holdovers without being overly cluttered.
On the range, they begin by confirming zero at 100 yards with the Sig Tango 6 set to 6x magnification. After a few shots, they are satisfied with the point of impact and transition between different steel targets. The hosts comment positively on the reticle design while engaging at distance. They then dial the optic down to 1x with no illumination activated, using only the black etched reticle. Firing a series of faster shots, one host notes that slowing down improves hits but admits it is tempting to shoot quickly. This sequence highlights how the optic performs both at maximum magnification for precise 100-yard shots and at true 1x for closer, more rapid engagements.
They observe that the Sig Tango 6 reticle becomes very fine without illumination, which can make it harder to pick up on well-shot or darker targets. However, that same fine reticle is appreciated for precise shot placement at higher magnification. They reference the idea of aiming at small points, such as a button or a letter on a shirt, to achieve tighter groups rather than just aiming at a torso. Another feature they highlight is an etched alignment line on the optic body, which helps ensure the scope is mounted level in the rings. This prevents a canted reticle that could cause issues at longer distances. The issued model includes a factory scope mount, simplifying setup and helping keep the optic properly centered on the rifle.
In closing, they return to the question of durability. One host wants to see a dedicated stress test of the Sig Tango 6, noting that while it feels solid and uses materials like 7075-T6 aluminum for the tube and a titanium mount, it does not inspire the same confidence as an ACOG’s reputation. They mention that the optic is gas purged to prevent internal fogging and suggest submersion and impact tests to see how well it holds zero and survives abuse. Referencing a previous torture test comparing the Vortex UH-1 and EOTech EXPS2, they propose a similar ACOG versus Sig Tango LPVO test. Since the Tango 6 is a military contract optic relied on by service members, they argue that Classic Firearms should independently verify how much punishment it can withstand using the Alpha 4 mount and specified torque settings.
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