Product Description Luth-AR factory replacement 6-position Mil-Spec Carbine Buffer Tube. Fits standard AR-15 rifles. Mfg: Luth-Ar Ar-15/308 6-Position Mil-Spec Carbine Buffer Tube at Brownells.com Browse all Brownells.com deals $21.99 In Stock at Brownells.com Buy Now at Brownells.com Secure checkout Easy returns or compare prices Amazon eBay Product Details Category Buffer Tube Parts Brand Luth-Ar Luth-Ar