Original Sig Sauer AG quadrail as used by the Swiss Armed Forces on the Stgw04. These are the last ones available and will not be produced again.
Fitment guide:
Gen 1 Rail production late 1990’s-2010
SG552/SG553 Quadrail Handguard: Flush fit with no height gap. Twist-lock is achieved by the bayonet lug, which sits in the gas block.
Gen 1.5 Rail , production 2010-2020
SG552/SG553 Quadrail Handguard: flush fit with no height gap. Twist-lock is achieved by the bayonet lug, which sits in the gas block.
Gen 2 Rail , in production since mid-2020
SG552/SG553 Quadrail Handguard: To mount it, the User will have to mill a little notch in the handguard (Sig Sauer AG will not offer this from factory). The receivers Rail will sit 1,6mm higher than the handguards 12 o’clock rail. Twist-lock is achieved by the bayonet lug, which sits in the gas block.
SKU: 71010935 (34557330-1)
Made in Switzerland