Originally Posted by wind953
I thought WAs are supposedly higher quality than TMs. I've heard propane is fine for TM's awesome M1911A1, but definitely not for some of their other less well-built GBBs
Note, WA magna system generate more energy traveling back aka recoil so the higher pressure will increase stress on the pistol. In another words not recommanded, as WA are notoriously for 134a ONLY.