Trinity Force Omega Stock – Black The Trinity Force Omega mil-spec stock kit is an upgrade over a standard USGI kit. It has a more aggressive design and includes a Quick Disconnect mount for accessories. Satisfaction Guaranteed Lifetime Warranty Provided by Trinity Force Length (in) 7. Receiver Extension Type Mil-Spec Weight (oz) 22. Length of Pull Range (in) 3. Length of Pull Collapsed (in) 12. Length of Pull Extended (in) 15. Material High Strength Steel, Reinforced Polymer Color Black MPN TBA05 UPC 812530025534 SKU: 1602