B5 Systems Sopmod Stock - Govt Version Black. Whether you like the compactness or the adjustability either way this stock is an easy upgrade for any shooter. Manufactured with the same dimensions as a Mil Spec buttstock it allows you to install the stock in any configuration to match your shooting style. With several attachment options the SOPMOD stock allows you the adjustability and functionality you need. The locking notch on the buttstock allows for easy installation whether you are shooting the gun with or without a brace. Once installed the buttstock forms an integral part of your firearm making it an integral part of you Specifications for B5 Systems Sopmod Stock - Govt Version: Manufacturer: B5 Systems Gun Model: AR-15 AR-10 Gun Type: Rifle Number of Sling Points: 4 Weight: 11.5 oz Length: 7.4 in Condition: New Buffer Tube Size: Mil-Spec Country of Origin: USA Fabric/Material: Polymer Features of B5 Systems Sopmod Stock - Govt Version Ergonomic Cheek Weld Color Matched Steel Hardware Dual Water Resistant Storage Compartments Fixed Sling Mounts Cushioned Non-slip Buttpad with Built in M4 Multitasker Tool Holder (tool sold separately) Sure Grip Stock Latch Made of MIL-SPEC Materials and Finishes Fits MIL-SPEC Carbine Receiver Extensions Package Contents: B5 Systems Sopmod Stock - Govt Version What firearm models does the manufacturer say B5 Systems Sopmod Stock - Govt Version is compatible with? The manufacturer suggests that B5 Systems Sopmod Stock - Govt Version is compatible with AR-15 AR-10B5 Systems SOP-1351: Sopmod Stock - Govt Version Black