This is the Strike Dual Folding Adapter (FSA) - Stock Edition. The Strike Dual Folding Adapter is a versatile and innovative patented system that offers unparalleled convenience and flexibility. With its intuitive folding mechanism, you can fold the adapter to either the left or right side of your weapon platform. Without the need to reconfigure or reinstall any parts, the provided locking mechanism has a positive lock and ensures its ability to stay in place. Deployment is quick and effortless with just a simple upward pull on the bar near the hinge. Its 3-degree tilt angle is designed to help prevent interference with your weapon's ejection port when folded to the right as well. This adapter fits directly onto a 1913 Picatinny interface with built-in locking lugs for secure attachment. The included Stock end is a great ergonomic option for completing your build. Strike's Dual FSA's name comes from its ability to fold to the left and to the right - as well as its interchangeability to swap out the Stabilizer end to a Stock end, should you desire to have a Short Barrel Rifle (SBR) configuration. Use it with most 1913 Picatinny rear ends, including the Strike AR Picatinny Stock Adapter, or any factory OEM weapon with a Picatinny rail. With the Strike Dual Folding Adapter – Stock, you get the ultimate modular folding adapter that weighs under 10 ounces. PLEASE NOTE: -Dirt and/or sand can hinder folding hinge proper operation. -Not recommended for use while mortaring firearm to clear malfunctions. -Expect wear and tear on folding locking mechanism from long term use. -Be careful, avoid fingers from getting caught during folding and unfolding process. WARNING: -Not recommended for use while mortaring firearm to clear malfunctions. -Before every use, always check proper function of your QD mount and/or sling loop and any wear and tear from use. -Always have your weapon in the SAFE position when not being fired. -Always follow all firearms safety rules and never point your weapon at anything you are not willing to destroy. DISCLAIMER: -Always check with your state and local laws. We are not lawyers and cannot provide legal advice. -Stock was designed and intended for use with a rifle setup or registered Short-Barrel Rifle (SBR) setup. Specifications for Strike Industries Dual Folding Stock: Manufacturer: Strike Industries Color: Black Hand: Ambidextrous Gun Make: Ruger, SIG Sauer, AR Platform, CZ Gun Model: AR-15, CZ Scorpion EVO 3, SIG Sauer MCX, Brugger & Thomet APC9, CZ BREN 2, Ruger PC Charger, CZ Scorpion, AR-10 Finish: Matte Length: 9.44 in Condition: New Weight: 9.9 oz Application: Tactical, Outdoor, Work, Duty Width: 2.09 in Activity/Occasion: Outdoor, Tactical, Duty, Professional, Sports, Training Gun Type: Pistol, Rifle Age Group: Adults Fit: MIL-STD-1913 Picatinny Rail Base/Mount Type: 1913 Picatinny Size: One Size Height: 4.56 in Gender: Unisex Attachment/Mount Type: MIL-STD 1913 Picatinny Seasonal/Temperature Use: All Seasons Quantity: Pack Features of Strike Industries Dual Folding Stock Preassembled with stock rear piece for rifle or registered Short-Barrel Rifle (SBR) Patented first-in-market Picatinny dual folding adapter with intuitive unfolding system Folds left or right anytime without flipping or reconfiguring hinge Positive lock in the folded position, included rubber pads for folding adapter indentation to adjust desired locking tension when fully deployed Pull up on bar near hinge and back for quick deployment when folded 3-degree down tilt to help prevent interference with ejection port when folded to right side Mounts directly to 1913 Picatinny interface with 2 built-in locking lugs Ambidextrous QD sling mounting points Rubber anti-slip buttpad Modular system with interchangeable parts sold separately (strut, cheek riser, stabilizer & more) Lightweight at under 10 ounces Package Contents: Strike Industries Dual Folding Stock x1 Strike Dual Folding Adapter x4 Rubber Pad For Dual Folding Adapter Indentation To Adjust Desired Locking Tension When Fully Deployed x1 Torx Tool T25 x1 Warning Card