7mm Sidewinder LP – Sig Cross Magnum Sawtooth Two-Round Holder

7mm Sidewinder LP for the Sig Cross Magnum Sawtooth

The KMRNL 7mm Sidewinder LP brings the Sidewinder low-profile design to the 7mm setup on the Sig Sauer Cross Magnum Sawtooth. LP stands for Low Profile. Based on the V4 Magnum Sidewinder, this version uses a shorter body for 7mm cartridges and carries two spare rounds close to the rifle.

Key features

• Purpose-built fit: designed specifically for the Sig Cross Magnum Sawtooth.
• 7mm only: a shorter version of the Sidewinder design sized for this 7mm application.
• Two-round capacity: keeps two spare cartridges together near the ejection port.
• Low-profile body: compact placement with minimal added bulk.
• M-LOK mounting only: direct mounting with the included steel hardware.
• Carbon fiber construction: black body with steel hardware.

Fitment and ARCA accessory compatibility

Works with most ARCA accessories, but not all. Clearance depends on the size and shape of the ARCA accessory used alongside the holder. Some accessories may interfere with the Sidewinder LP. Check clearance with your specific ARCA accessory before use.

Single-point sling attachment: the holder sits over the factory quick-release attachment point used for a single-point sling. That attachment point cannot be used while the Sidewinder LP is installed.

This holder is specific to the Cross Magnum Sawtooth 7mm setup. Compatibility with other rifle platforms or cartridge sizes is not implied.

What is included

• One KMRNL 7mm Sidewinder LP two-round holder
• Required steel M-LOK mounting hardware

Ammunition, firearm, optic, and other accessories shown in the photos are not included.

Choose your Sidewinder

For the 300 PRC version, see the KMRNL V4 Magnum Sidewinder. You can also browse all KMRNL cartridge holders or contact KMRNL for fitment help.