Product Description Rival Arms RARA300001D: The Rival Arms Thread Protector is CNC-Machined from 416rd stainless steel billet results in superior corrosion resistance and durability. THRD PRTCTR 9mm 1 2-28 Fluted SS at Classic Firearms Browse all Classic Firearms deals $24.99 In Stock at Classic Firearms Buy Now at Classic Firearms Secure checkout Easy returns or compare prices Amazon eBay Product Details Brand Rival Arms MPN RARA300001D Accessories Rival Arms