The Amoeba AS-01 Striker Airsoft Sniper Rifle GEN5 is a bolt action rifle featuring a unique magazine and cylinder system.  The shortened cylinder assembly reveals the breach area upon being locked back, making for a more realistic action.  It also features an incredibly robust polymer stock and forend, as well as a thick rubber butt pad on the stock.  The rifle comes with a 45 round magazine, the allen keys required for disassembly and hop adjustment (stored in the base of the grip), and shoots 400 fps with .20g bb's. Comes in a variety of stock colors - Black, Dark Earth (tan), OD Green, and Urban Grey.

This is the GEN5 from Elite Force.  New for 2018, this is an official Elite Force product with the upgraded parts that provide better reliability than previous gens.

For those interested in modifying the rifle, the inner barrel length is 550mm and it can use VSR-10 style barrels and VSR buckings. The Hopup chamber is proprietary and is a TDC style (top dead center).   Action Army offers an upgraded version which you can find here.  As for the cylinder components, it is able to use AEG springs, the pistons are proprietary but are metal and much sturdier than most VSR pistons out of the box. 

Overall, the Amoeba AS-01 Striker is a very unique rifle and makes for an awesome gun to build on if you'd like to stand out on the field.