The M4 Tactical Adjustable Telescopic Stock for Benelli M4 clone shotguns is adjustable for three different positions: fully collapsed, mid position and fully extended. The installation of the M4 Tactical Adjustable Collapsible stock does not require tools and can be accomplished in just a few minutes if you are familiar with your Benelli M4 clone's takedown. A dramatic improvement to overall length and length of pull over the original fixed stock of the Benelli M4. Everything needed is included in the box with this collapsible stock kit. The M4 Tactical Adjustable Collapsible stock kit comes with 1 pistol grip. 1 pistol grip nut, and 1 buttstock. The Benelli M4 and most clones already have the different stock positions machined into the buffer tube, ready for installation of the stock. A good upgrade for those looking for the adjustable option or who just want the cool original design. Specifications for Panzer Arms M4 Tactical Adjustable Telescopic Stock Set: Manufacturer: Panzer Arms Gun Type: Shotgun Condition: New Gauge: 12 Package Contents: Panzer Arms M4 Tactical Adjustable Telescopic Stock Set 1 pistol grip 1 pistol grip nut 1 buttstock