I have a Echo1 platinum edition M4 in good condition with some upgrades. JP outer barrel kit. 6.03 tbb( very well could be a 6.01, i can’t remember.) Pretty sure it’s Madbull. Madbull hop up unit and bucking. Stock is just an OD replacement part. Mag pull mid rd mag included. I’m looking to get back into Airsoft but on the cqb side. This gun hasn’t been shot in years other than when I tested to see if everything still works. Which it does. Still had very good compression. When I bought it it advertised 400fps. Don’t know what it’s shooting now with a 4 inch longer tbb. Very accurate as well.This gun has never given me any problems. Probably needs to be opened up and given some TLC. Very solid gun. The other reason I’m selling/trading is I eventually want to get a HPA rifle other wise I would just hang on to this thing. This gun can definitely be used right away or used as a platform for upgrading or just as parts. $150 OBO. HMU with an offer. I can send more pics upon request.