The Mil-Sport is made from quality forged 4140 aluminum, and is built to take anything you throw at it. Introduced in 2012, the Mil-Sport M4 Carbines became instant hits among customers looking for top quality AR-15 style rifles with forged aluminum receivers. Fine-tuned with many popular features, these U.S. built beauties perform perfectly right out of the box, and are priced just right.
Poor Quality Control. Gun was beat to hell and back upon arrival at FFL. PLASTIC trigger and hammer. Spend another $100 and get a milspec AR and not a milsport. This is the sloppiest off the shelf AR I have ever dealt with!
When I picked it up and brought it home I noticed the hand guard was wobbling side to side. After removing the hand guard I found that the barrel nut was lose. Thank God I checked because it could of been a disaster waiting to happen. After I torqued down the barrel nut and set hand guard in place with locktight it is flawless. The only reason I gave it a 3 overall is because of quality control.