- Operating System: Proprietary HK short-stroke gas piston system. This allows the rifle to run significantly cleaner and cooler than traditional direct-impingement AR-10 style platforms.
- Barrel: 16.5-inch cold hammer-forged, cannon-grade steel barrel with a 1:11 twist rate for superior accuracy with heavy-grain match ammunition.
- Furniture: Depending on the exact sub-variant or production year, it typically features a modular free-floating handguard (either HK MRS or M-LOK), a proprietary oversized buffer system to dramatically mitigate recoil, and an adjustable stock.
- German date code BG stamped right next to the German proof mark on the left side of the upper receiver. Heckler & Koch uses a standard letter-to-number dating system (A=0, B=1, C=2... G=6). This confirms this rifle was manufactured in 2016.
- Original HK Modular Rail System (MRS): It features the original, sought-after HK proprietary keyhole handguard (pre-M-LOK era), which is correct for a 2016 production model. It includes the small factory Picatinny rail sections attached near the muzzle.
- Factory Markings: The receiver features the distinct, bright orange factory target warning sticker inside the magazine well area, which is a great indicator to collectors that the rifle has been handled carefully and not heavily abused.
- Receiver Text: Clearly stamped with "MR 762 A1 Heckler & Koch Inc. Columbus GA" on the upper and "MR 762 A1 7.62 mm x 51" on the lower.
- Magazine: Includes one original translucent factory HK 10-round polymer magazine (shown detached).
- Wear & Condition: The feed ramps, magwell interior, and charging handle track show minimal finish wear, indicating a very low round count.
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