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Mfg Item #: AC57
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This piston by Silencer Co. is made out of 17-4 stainless steel, and features a 5x36 thread pattern.
ATTENTION: If you are ordering the last of an available quantity and you do not check with an associate of Crossroads Firearms before placing your order. You may be at risk of getting a full refund/ cancellation if our in house inventory or distributors are out of stock before your online order has been processed.