Details, The WE MSK is a replica of the Masada ACR with a flat top accessory rail with detachable iron sights. The MSK has a 30 round magazine but a very large gas reservoir in the magazine means it can easily empty a whole magazine with gas still to spare in the magazine. Firing at a pretty consistent 350 fps, it is powerful enough to engage out to short-middle range but still low enough for very short and indoor use making it useful for urban fighting sites and CQB. When the magazine is empty, the bolt locks back with the bolt release present just in front of the trigger just like the real steel. The bolt charge is on the left side of the gun, the bolt and magazine release are accessible equally from both sides and the fire selector is present on both sides making this a very ambidextrous weapon. As with all Gas Blow-Back weapons, performance varies depending on ambient temperature and speed of firing. 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.