Hot off the heels of their recent (and welcome) expansion into Glock 43 magazines, ETS otherwise known as Elite Tactical Systems has yet another trick up their sleeve – tritium-infused followers for their AR-15 magazines. Partnered with Advanced Combat Solutions, the new magazines feature the same radioactive inserts as popular night sights.

Tritium is unique for its radioactive decay, which produces a mild visible glow, often a fluorescent green. This decay allows tritium to “glow” in low and no-light situations without the need for an external light source to “power” the glow feature. Tritium does this by itself. It’s the primary technology powering many of Trijicon’s offerings (which takes its name from the material).

The new follower is largely identical to the standard follower, sans a color change and the tritium insert. The ACS follower features a blue color with green tritium. The magazines are the same standard ETS offering, translucent with integral coupling capability. ETS magazines are ribbed and tout a variety of improvements over standard magazines.

The new follower if offered by itself for $15.99/unit or included in a magazine at $33.99 for the standard magazine or $35.99 for the integrally coupled version. No word yet on the option for tritium inserts for other platforms from ETS, specifically the Glock magazines which are similarly translucent.