The Sig Sauer M400 Tread MLOK Handstop Kit with Screws & Nuts is an essential accessory for enhancing the control and handling of your M400 Tread rifle. This kit includes both short and long handstops, allowing you to customize your grip for optimal comfort and stability. The MLOK connectors and mounting hardware ensure a secure and easy installation on your rifle's handguard. The handstops are constructed from durable materials, providing a reliable and sturdy grip during shooting. The black finish complements the look of your rifle, making it a practical and stylish addition to your firearm. Sig Sauer M400 Tread MLOK Handstop Kit w/Screws & Nuts KIT-TRD-GRIP-HANDSTOP-BLK