The UK Arms Spring airsoft gun series is constructed from plastic that keeps the weight down but is not as durable as its high end metal counter part. The airsoft gun is operated by pulling the slide which cocks the spring for a single shot. The spring system used in this gun allows it to be very affordable, however it is not skirmishable. The airsoft gun has realistic features such as the magazine, trigger and sights. Despite the realistic features, the airsoft gun leaves much to be desired in the authenticity department. This gun is a low powered spring airsoft gun that is extremely affordable and non-upgradeable. Please keep in mind, this gun is not skirmish ready and will be easily out performed by most quality airsoft guns. This gun is non serviceable and does not come with a warranty of any kind. This gun makes a great display piece but do not belong on the field. As previously stated, this gun is not field ready due to its low performance. Although due to its realistic look and features, this gun is a great choice for use in film productions or as a great display piece. Please do not expect to be able to compete with high quality airsoft guns while using this low cost airsoft gun.