Product Description Luth-AR factory replacement Mil-Spec AR-15 Hammer with J-Spring installed. Fits standard AR-15 rifles. Mfg: Luth-Ar Ar-15 Mil-Spec Hammer With J-Spring - Ar-15 Mil-Spec Hammer W/ J-Spring at Brownells.com Browse all Brownells.com deals $17.49 In Stock at Brownells.com Buy Now at Brownells.com Secure checkout Easy returns or compare prices Amazon eBay Product Details Category Hammer Parts Brand Luth-Ar Luth-Ar