Ruger 19300: This model features a threaded barrel, reversible, side-folding, adjustable stock and 20-round magazine. Weighing under 6 lbs., the lightweight and compact Ruger LC Carbine utilizes the same steel magazines and familiar ergonomic controls as the Ruger-5.7 pistol.Unique bolt-over-barrel design with the magazine in the grip allows for excellent balance and pointability. Folding stock and collapsible sights are ideal for compact storage.The reversible folding stock, with adjustable length of pull, is compatible with both AR-pattern and Picatinny rail-mounted aftermarket accessory stocks.Features a 16.25\" fluted, nitride-treated steel barrel for strength, accuracy, and longevity.1/2\"-28 TPI threaded barrel with thread protector allows for the attachment of popular muzzle accessories including muzzle brakes, flash hiders and caliber-appropriate suppressors. Impressive ergonomics with ambidextrous manual safety, reversible charging handle, ergonomic bolt release and extended magazine release latch.