LAS VEGAS -- Highlighting the trend of consumers increasing opting for optics, Austrian gun-maker Glock has rolled out a modular optic system for many of its popular pistols.

The company is introducing Glock models 17 and 19 Gen. 4 MOS, for Modular Optic System, at this year's SHOT Show, according to Kyle Hopp, commercial manager for Glock. The system allows for the installation of a reflex sight" such as Deltapoint Pro by Leupold Optics or others, he said.

"What this does is allows a shooter to now have one focal point, the red dot in here, instead of trying to line up your rear sight and front sight," he said on Monday at the show's range day outside the city. "The advantages here are speed for competitive shooters, ease of training for those maybe just learning to shoot, a lot of possibilities with this set up."

Hopp said the company noticed that customers have modifying their pistols -- sometimes to the tune of a few hundred dollars -- to accommodate the technology.

"Historically, people would take our pistol and cut the slide and in doing so, you now hope that everything is going to work, everything is going to line up, hope that you could get it refinished," he said. The company figured, "why don't we just go ahead and do it ourselves? he said. "That way, you get all the quality taht you come to expect from a Glock pistol from the factory."

The modular optics system adds about $80 to the retail price of the pistol and is available on Glock models 19, 17, 34, 45, 40 and 41, Hopp said.

--Brendan McGarry can be reached at brendan.mcgarry@military.com. Follow him on Twitter at @Brendan_McGarry.