The Sig M11-A1 is proud to serve. The M11 is issued to US Naval Aviation and key units throughout all the Armed Forces. The military trusted M11 has been upgraded by Sig Sauer just for you. The M11-A1 features a stainless steel slide, short reset trigger, three 15 round flush fit magazines, phosphate coated internals, SigLite night sights, and mil-std UID label.