Check out this review of the G&G EGMA4 STD EBB done by Timerzanov Airsoft... "Hello ! Today a little video review of the famous MP5A4 Blowback from G&G Armement. The MP5 A4 is a submachine gun produced by the German firm Heckler & Koch since the 1960s, used by various police services around the world. G&G Armament offers a replica of the MP5A4 under the name EGMA4. We find an ABS finish with good strength.