<p>HK MR556A1 COMPETITION MODEL BULLET BUTTON •Includes Raddlock bullet button & fixed mag •Semi-auto •Short-stroke gas-piston pusher-rod system (replaces common gas tube) •Full-length top rail •7.6# trigger pull •HK cold hammer forged barrel •” Modular Rail System (MRS) handguard •Ambidextrous controls •Convertible charging handle •Extended mag release •Magpul CTR adjustable 6-position buttstock •Ergonomic pistol grip •Translucent polymer box mag •M”-37.00″ •Wt.: 8.8</p>
