Produced by John Stemple of Ohio. Introduced in 1986, the E4 variant was meant to be more flexible in the infantry support role, integrating ambidextrous sling support, a shorter barrel and flash hider and a forward pistol grip. Elevated blade front and flip-up adjustable rear sights, with the folding bipod mounted on the gas tube behind the attachment point, with sling swivel and a plastic forearm with pistol grip. The receiver has the Stemple markings on the left side, and "7.62mm M-60" on the underside. Checkered pistol grip with "SD" marking and ambidextrous safety, and a ribbed synthetic buttstock with checkered steel buttplate. NOTE: This is a fully transferable NFA Class III Firearm currently on a Form 4. You are required to check your state and/or local laws as to whether or not you may own this. This weapon can be transferred to a Class III dealer at no charge. Buyer pays all other transfer fees and stamps.