Sylvan Arms Gen 4 Left Folding Stock Adapter for AR-15

The Sylvan Arms ARH400-L Gen 4 Left Folding is a folding stock adapter for AR-15 pattern rifles, designed to fold the stock closer to the lower receiver to reduce overall length and gaps. It is intended to make a standard AR-15 setup more compact.

The adapter is CNC-machined from 7075 billet aluminum in black, weighs 6 ounces, and uses a standard 1-3/16 x 16 thread. It is a left-hand unit and is listed as compatible with 223 Remington, 5.56x45mm NATO and 308 Winchester chamberings. It fits most AR-15 platforms and some AR-9 and AR-10 rifles with the same thread.

Per the retailer text, it works with standard AR-15 bolt carrier groups without additional parts, and some AR-9 bolt carrier groups are not compatible. Installation requires the included Sylvan Arms wrench and does not require disassembling the rifle.

• Brand: Sylvan Arms
• Model: ARH400-L Gen 4 Left Folding
• Hand: Left
• Material: 7075 Billet Aluminum
• Weight: 6 oz
• Thread Pitch: 1-3/16x16
• Color: Black
• Platform: AR-15