I have purchased quite a few guns from D4 (via GunBroker). D4 has become great to work with on all my purchases. You won't go Incorrect by obtaining from D4For sling accommodation, 4 integral metal inserts are embedded for QD kind sling swivels (QD swivels not bundled), and is usually Outfitted with two regular UM style sling swivel studs. The groo… Read More