I have had an EKOL ES-66 .177cal/4.5mm Co2 pistol for a few years.
They are made in Turkey by a company that primarily makes blank firing replica guns, and this Co2 pistol is converted into an airgun from a blank gun.
It is a very realistic heavyweight pistol.
I have the shiny chrome finished pistol, which wasn't by choice, it was the only finish available.
The EKOL ES-66 has a heavy trigger pull, which makes accuracy difficult, but in time and with practice I was able to shoot straight enough to enjoy this pistol.
The EKOL ES-66 has a full size magazine which holds the Co2 & valve system and the spring fed BB mag.
4.5mm/.177cal. Gamo lead roundball ammo cycles perfectly in this pistol, and shoots straighter than the smaller BB caliber steel airgun shot(.175") thanks to a rifled steel barrel.
i think that it resembles the Browning Hi-power 9mm, except for the wraparound plastic grips, and was thrilled to discover that EKOL was bringing out a new version that looks even more like the Hi-power 9mm!!!
The new pistol is the ES P66, as well there is a compact version and both have grips that look identical to those found on Browning Hi-Power 9mm handguns.