Geissele 08-421B Border Patrol 5.56 NATO 14.5" Short Barreled RifleThe Geissele Border Patrol 5.56 NATO is an 14.5" short-barreled rifle designed for durability and performance. It features a robust build with a carbine-length gas system and a 20 Super Modular Rail for lightweight strength and modularity. The Geissele 08-421B rifle includes Geissele’s standard Super Duty receivers, a skeletonized handguard with M-LOK slots, and a Government Charging Handle with ambidextrous levers. Enhanced with a braided wire buffer spring for increased reliability and ALG Defense’s Advanced Combat Trigger for smoother operation, the Border Patrol is optimized for reliability and functionality..yellow-box p {font-size:16px}.special-tab {color: #FFFFFF}.yellow-box ul li {font-size: 16px;}The Geissele Border Patrol is a rugged AR-platform rifle that maintains mil-spec functionality. Available in barrel lengths of 11.5", 14.5", 16", and 18", it features carbine, mid, and rifle-length gas systems, all made from durable 17-4 stainless steel. The gas block is secured with both pins and set screws to ensure precise alignment. To reduce weight, the Geissele Border Patrol Rifle is equipped with a skeletonized 20 Super Modular Rail featuring M-LOK slots and a keyed mating system to prevent handguard twist. The rifle's upper and lower receivers are forged from 7075 T6 aluminum and hard-coat anodized, and include stainless-steel take-down pins, a posi-lock safety, Ultra Duty magazine release, and Super Duty trigger guard. Additional features include Geissele's ambidextrous Government Charging Handle, a braided wire buffer spring for enhanced reliability, and ALG Defense’s Advanced Combat Trigger, which offers improved smoothness and corrosion resistance over standard mil-spec triggers. Features of the Geissele Border Patrol RifleAvailable in 11.5", 14.5", 16", and 18" barrel lengthsSkeletonized 20 Super Modular RailSuper Duty upper and lower receiverBraided wire buffer springALG Defense Advanced Combat Trigger Geissele Border Patrol 5.56 NATO 14.5" Short Barreled Rifle (NFA) 08-421B