Shadowfox

Evening, I am new to airsoft been three times now and love it. I have hired equipment at the sites when I have gone. Looking at getting my own now. Just wanted some recommendations on what manafucters are good and if there is a per specific assault rifle that's good for a new comer. Obviously don't want to spend bucket loads of cash. Max £300 on the gun and obviously would like to be able to add sights .etc and all that cool stuff to it. Thanks in advance for any feedback or advice.