Ultimate Gun Sling Same day shipping. Specialty Outdoor Products LLC is the Manufacturer and SOLE Seller of this Unique Double Strap Firearm Sling made of non-slip thermoplastic rubber, will not dry rot and will not slip off your shoulder. Can be used on any firearm, Rifle, Shotgun, Muzzleloader or a Crossbow. Looking for the perfect gift for the hunter on your list? The Ultimate Sling American Made, Lifetime Guarantee, 12 Month Satisfaction. Same day shipping. Seen on TV and comes with a lifetime warranty one year satisfaction - Made in the USA Slings come equipped with American made, strong metal swivels (uncle mike style) Can be carried on one shoulder, split strap for 3/4 backpack, or front and ready barrel up or down