Description Reviews Mossberg MMR PRO SEMI-AUTO RIFLE. The new MMR Pro delivers the 3-Gun features shooters are looking for to gain the competitive edge. Mossberg has designed the perfect AR for 3-Gun — an accurate performer with competition-proven features to ensure peak performance time-after-time.Key Features: New JM Pro Drop-in Match Trigger; rifle-length direct-impingement gas system; free-floating 18”stainless steel barrel for superior accuracy; Silencer Co muzzle brake with suppressor ready ASR mount; 15” slim-profile forend withM-LOK®; Magpul ® MOE+® grip/trigger guard; Raptor ambidextrous charging handle; and 6-Position stock with interchangeable FLEX™ padfor length-of-pull flexibility. (See Comparison Chart on Page 2 for a full list of MMR specifications)The MMR Pro is chambered in 5.56mm NATO/ 223 REM, and ships with a 30-Round MagpulPMAG magazine WARNING: Must be 21 or older to purchase. If you live in California, please read your local laws before ordering. Highest Quality, Fastest Shipping.