Details, This M16 Rifle from WE is probably the closest you can get to the real thing! This really is spectacular, with a full gas blow-back action, a 32 BB capacity double stack magazine, and even a 20mm top rail under the carry handle. The blow-back gives a hard kick and the internal bolt locks back on empty. This gun has a full metal body, so it weighs in almost the same as the real steel M16! This gun will run well on Green Gas with a satisfying crack! As with all Gas Blow-Back weapons, performance varies depending on ambient temperature and speed of firing. Please note these have had an NPAS valve fitted to downgrade the fps if they are coming in hot so they are able to be used in airsoft skirmishes in the UK. They are set at around 330 fps. You MUST be 18 or over to purchase this. Please note this is a VCRA applicable Realistic Imitation Firearm. You must be UKARA registered (or have a defence under the VCRA) to purchase this as is, Please contact us or state your UKARA registration number in the comments box when you order. If needed we can spray this for you (at an extra cost of £15.00) so that it meets the requirements to allow anyone over 18 to purchase this. Please select this option from the menu above.