The HM50B2 is the evolution of the HM50B Rifle. HM Defense lightened and strengthened areas that are beneficial for military and law enforcement use. The HM50B2 upper receiver, lower receiver and rail were designed with a modern look and lightened. The machined adjustable stock is made by HM, with a steel through bolted mounting system joining the stock to the lower receiver. The stock has an adjustable comb, length of pull, butt pad, flat bottom and includes a removeable1913 picatinny rail, for secure monopod mounting. Features a button rifled, threaded barrel; 14" Picatinny rail; aluminum receiver; HM Target trigger and ERGO Tactical Super Ambi grip. Includes removable monopod mount, 10rd mag and hard case w/laser cut foam.Caliber 50 BMGBarrel Length Range 29" to 29.99"Gun Platform AR StyleStock Finish Group GreenCapacity 10+1Stock Material AluminumOAL 56.75 "Sights NoneBarrel Finish Black CerakoteBarrel Material Chrome Moly SteelMuzzle Recor Muzzle BrakeTwist 1:15"Receiver Description Picatinny RailMagazine Type Double StackGrips Tactical Super AmbiHandguards M-LOKReceiver Material AluminumThread Pattern 1"x14Stock Description HM Precision AdjBarrel Description Match Grade ThreadedBarrel Length 29.25"Length of Pull AdjustableMax Capacity 10Receiver Finish OD Green CerakoteTrigger TargetWeight 29.75 lbsStock Finish OD Green Cerakote