A hinge adapter for the PT-1 and PT-3 (compatible with both models) stocks in 4.5mm.
Made for the AKS-74U series of rifles, Bulgarian Arsenal rifles, and any others without the standard 5.5mm hinge folding stock.
(If purchasing with the PT-1 or PT-3 stock, you can select this part as an option. This listing is for users who already own a stock that just need this adapter)
PT-1 and PT-3 4.5MM Stock Hinge Adapter