Lightly used Shipping is $40.00 extra Features Full metal upper and lower receivers, all ronin uppers can be used on any Ronin lower, allowing for one rifle to fill a variety of different roles, from SBR to DMR Adjustable PTS Enhanced Polymer Stock allows for adjustable length of pull CNC machined 10" keymod handguard allows for easy integration of most popular accessories Enlarged trigger guard and ambidextrous fire controls make weapon manipulations easy AEG2.5 gearbox allows for FPS adjustment with one tool One piece rotary hop up Reinforced and radiused gearbox Switch lift extender prevents the burnout of trigger contacts