We are excited to release the new Sierra One featuring a six position collapsible and foldable stock, an AR-15 style shroud with four built-in Picatinny rails and a new AR-15 style magazine that doubles as a helpful toolkit. The marker also incorporates a flat-top Picatinny rail built into the receiver, which makes it simple for players to quickly add a handle, site, scope or a variety of other modifications. The Tippmann Sierra One Paintball gun is highly upgraded and is sure to turn heads on the field. As an added benefit, the Tippmann Sierra One paintball gun can be easily enhanced with an eGrip™ as well as several other performance upgrades from the Tippmann 98 Custom Platinum Series, including: the Cyclone Feed System, Response Trigger and Flatline barrel. Overall, the Tippmann Sierra One Paintball Gun is great for any Beginner to Intermediate paintball player and with a few select upgrades will be a great gun for even the most advanced paintball player.