For sale is my Brothers A&K M4 DMR. It fires at around 420 FPS, reason for sale is my brother now has an SRS and this doesn’t get any use.     Purchased from Combat UK, with a scope laser grip and a few other choice “upgrades”, it fired like crap, after they messed us about and kept it till it was out of warranty and then handed it back to us, (honestly), I took it apart and put it back together carefully(it has a quick change spring system as well!), I put a new G&G green