$3,595 + shipping
This is an HK MR556-A1 rifle with a 10.4" barrel and the original 16" barrel. It's been fired only to test the short barrel both with and without a suppressor to ensure reliability, and it's 100% reliable. The short barrel on this helps it balance absolutely perfectly. It will be shipped to a Class III FFL as an SBR with the original box, case, paperwork and magazine.
Contact: Bob Margolis, LifeSafe Training, LLC bob@lifesafetraining.com or 860-778-1212