ODIN Works Tangent X 15.5" Forend (SIG Cross)

The ODIN Works Tangent X is a serious Cross handguard upgrade. The factory Cross handguard is a serviceable M-LOK unit, but it does not provide the long ARCA interface PRS shooters and bipod-loop hunters want for ARCA bipod and tripod clamps. The Tangent X drops in on the standard SIG Cross, replaces the factory forend with a 15.5-inch 6061 aluminum unit, and adds an 11-inch industry-standard RRS ARCA rail plus M-LOK slots around the forend.

Critical fitment note: the Tangent X is sized for the original Cross / Cross STX receiver. ODIN Works does NOT list the Cross Magnum as a fit, and the Magnum's longer one-piece receiver and bigger handguard interface require SIG's Magnum-specific handguards (Sawtooth, etc.). Before ordering, confirm the rifle is the standard Cross or Cross STX, not the Magnum or Magnum Sawtooth.

Install is a 10-15 minute bench job. The Tangent X uses the factory Cross handguard interface and its own torque spec on the receiver clamp. Pair with an Atlas BT46-NC or MDT Ckye-Pod via ARCA clamp and the Cross becomes substantially more PRS-capable without changing the receiver or trigger group.