HomeAR PartsTimber Creek OutdoorsTCO Lower PartsTCO Castle Nut TCO Castle Nut $6.39 Purchase this product now and earn 6 Headshots! TCO Castle Nut quantity Add to Gun Case Compare Add to Wishlist SKU: TC CN Categories: AR Parts, TCO Lower Parts, Timber Creek Outdoors Tag: Castle Nut Brand: Timber Creek OutdoorsProduct ID: 8407 Download Catalog Description Additional information Product Enquiry Description ****Weapon parts are not eligible for international shipping**** TCO Steel Castle Nut is a Mil-Spec castle nut for use with AR-15 carbine receiver extensions. Proudly made in the U.S.A. Additional information Weight 1 lbs Dimensions 4 × 3 × 2 in Product Enquiry Name Email address Enquiry Related products Buffer Tube, Buffer Tube Kit, Receiver ExtensionBuffer Tube Kit (Receiver Extension) $64.80 Quick View This product has multiple variants. The options may be chosen on the product page Compare Compare Lower Parts KitTimber Creek Lower AR Parts Kit $79.99 Quick View This product has multiple variants. The options may be chosen on the product page Compare Compare BarrelsTCO 5.56 Barrel $199.99 Quick View This product has multiple variants. The options may be chosen on the product page Compare Compare AR Takedown PinsAR Takedown Pins Sets $15.99 Quick View This product has multiple variants. The options may be chosen on the product page Compare Compare