"The POF USA Wonder AR-15 Semi-Auto Rifle features a reliable, time-proven design. Nitride heat-treated 16.5"" threaded chrome-moly barrel with 1:8 rate-of-twist offer reliable accuracy shot after shot. The lower receiver features the following: ambidextrous safety selector, magazine release, bolt hold open, and bolt release with enhanced bolt catch: receiver tension screws, oversized magwell flare and a swappable trigger guard. The muzzle brake controls gas dispersion and reduces muzzle rise to get you back on target quickly. Other features include a collapsible MFT stock, M-LOK MRR rail, direct impingement gas system, and drop-in trigger system. Includes 30-round MFT magazine. Collapsible Mission First Tactical stock Direct impingement Flat trigger Ergo pistol grip 16.5"" threaded barrel 1:8 twist M-LOK MRR rail Muzzle brake Short-stroke piston Ambidextrous safety selector"