We offer for sale Lothar Walther AR-15 LW-50 barrels chambered in 5.56 Nato and .223 Wylde these are offered in 7.5”, 10.5”, 16’, 18”, 20” and 24” in length. The 18” and 20” AR15 SPR and DMR 5.56 Nato and .223 Wylde barrels are of the highest quality. These Lothar Walther barrels can be used on a Standard AR and AR-15 M4 uppers as well as most AR and AR-15 Billet uppers. The Lothar Walther 5.56 Nato and .223 Wylde barrel materials we use for our 7.5”, 10.5”, 16’, 18”, 20” and 24” barrels are LW-50 Stainless steel known for long life and extended wear characteristics. The .223 Wydle and 5.56 Nato barrels are match grade standard or polygonal button rifled. They have six lands and grooves and are Lothar Walthers specific rifling profile for our 5.56 Nato and .223 Wylde chambered barrels which are available for shipping. They are produced from the highest quality German LW-50 stainless steel. Lothar Walther chambers the AR15 barrels with 5.56 Nato and .223 Wylde chambers which will fire 5.56X45 ammunition as well as .223 Match ammunition from Lapua, Federal, Winchester, Hornady, S&B and Fiocchi as well as any other SAMMI or C.I.P specification ammunition. The AR-15 5.56X45mm and .223 Wylde chambered barrels used in our upper assemblies are completely stress relieved after they have been polygonal rifled. They are machined on the highest quality CNC turning centers and checked for straightness both before and after turning. The button rifled match grade barrels are CNC taper lapped by Lothar Walther after the chambers have been reamed. The LW-50 stainless steel barrels have a ground external finish and are supplied with an M4 barrel extension.