The combination the High Capa 5.1 and a high capacity CO2 magazine can only be purchased through Airsplat. Airsplat, one of the largest Airsoft retailer in the nation, has both the standard high capacity as well as the CO2 magazine, and of course the WE High Capa 5.1 currently in stock. This airsoft gun is very rare and hard to find. A full review by a 1911 firearms expert is available at www.airsplat.com/hicapa.htm.
Funny, I bought my WE and CO2 mag at JT - so much for "High Capa 5.1 and a high capacity CO2 magazine can only be purchased through Airsplat"....
These '11 lookalikes are really fine shooters - at Op Dark Knight I chrono'd my 5.1/CO2 combo at 380 - 395 - 398 on three consecutive shots. The red gas was a small fraction slower.
There *is* a small problem with the 0-rings popping loose, and requires a rather extensive teardown to fix (lots of little screws - don't try this in the field...
). The newer releases haven't shown this - yet. Search the forums here on AA for the fix action.