HK MR308 .308 Win Semi-Auto Rifle, 16.5 in CHF Chrome-Lined Barrel, Geissele M110A1 M-LOK Handguard, HK DMR Adjustable Stock, German CIP-Proofed
This German-made HK MR308 stands out with a custom configuration that mirrors the lineage of the HK417, G28, and M110A1 programs. It features a 16.5-inch cold hammer-forged, hard chrome-lined, free-floating barrel and a short-stroke gas piston system. A Geissele M110A1-pattern M-LOK free-float handguard and an HK DMR adjustable buttstock have been added, combining proven HK engineering with precision-focused upgrades.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are some superficial scratches and blemishes visible on exterior surfaces.
What's Included
- HK factory hard case
- HK owner's manual
- 1x 20-round magazine
- 1x 10-round magazine
- Folding backup iron sights (installed)
- M-LOK free-float handguard (aftermarket, installed)
- HK Slim Line HKey aluminum handguard (factory, not installed)
- HK DMR adjustable buttstock with cheekpiece (installed)
- HK factory buttstock (not installed)
The MR308 is the civilian counterpart to the HK417 and reflects the design lineage of the G28 and M110A1 programs. This example is German-made with CIP nitro proof and HK proof marks. The barrel and the upper receiver bear proof marks; the lower receiver does not. The barrel serial number does not match the receiver serial number. It carries a full-length T-marked Picatinny top rail and folding backup iron sights.
Performance-centered barrel construction includes a 16.5-inch cold hammer-forged, hard chrome-lined bore with a free-floating setup. A three-prong flash hider is fitted at the muzzle. The action is semi-automatic with a short-stroke gas piston and rotating bolt.
Thoughtful upgrades include a Geissele M110A1-pattern M-LOK free-float aluminum handguard and an HK DMR-type adjustable buttstock. The stock provides an adjustable cheekpiece and adjustable length of pull, finished in tan to match the HK-pattern pistol grip with molded texturing.
The rifle is configured on HK417/MR308 proprietary HK 7.62 piston pattern (not AR-10/SR-25 compatible) and chambered in .308 Win, with a 20+1 capacity. It includes both 20-round and 10-round factory HK translucent polymer 7.62×51 magazines as shown, supporting a range of use cases from range work to states with capacity limits.

