The Faxon Sentry rifle is an excellent choice for those looking for a full featured AR15 at a budget friendly price. The Sentry's long list of features begin with enhanced forged receiver sets with tensioning screw, a 16" 556 Gunner Profile Barrel and M15 Bolt Carrier Group that have been Nitride coated, and a 15" free Float M-Lok handguard. Faxon's unique Gunner profile combines the durability of Gov't profile barrels with the weight savings and maneuverability of the Pencil profile. The Gunner profile shifts the balance of the rifle back towards the shooter's body, improving balance, aiding in faster target transition, and reducing fatigue. Additional upgrades include a Hiperfire Enhanced Duty Trigger, Radian Raptor LT Ambi Charging handle, Radian Talon Ambi 45/90 Degree Safety Selector, Magpul MOE SL Carbine Stock & Magpul MOE Grip or similar upgraded product (according to availability), and Faxon MUZZLOK Muzzle Device. - CALIBER .223 REM/ 5.56MM NATO - MAGAZINE (1) 30rd capacity - BARREL 16" 556 Gunner Profile, MUZZLOK Muzzle Device - RECEIVERS Enhanced Forged Receiver Set w/ Tensioning Screw - HANDGUARD 15" M-LOK Aluminum - TRIGGER Hiperfire EDTDM Single Stage - STOCK Magpul MOE SL Carbine