Prvi Partizan Range Line 5.56x45mm NATO 55 Grain FMJ Boat Tail (MPN: PPR556)
For AR-15 owners running high-volume carbine courses, tactical rifle drills, or weekend range sessions, finding a full-spec 5.56 NATO round that feeds reliably without blowing out budget limits is essential. Prvi Partizan (PPU) engineered their Range Line 55-grain Full Metal Jacket Boat Tail (FMJBT) load to give shooters true M193-style performance without the military surplus price tag. Built to NATO pressure specs, this cartridge delivers the consistent chamber pressures and flat trajectories needed to train effectively with modern red dots, low-power variable optics (LPVOs), and iron sights.
Every round is manufactured in PPU's modern European facility utilizing tight component tolerances. The 55-grain projectile features a classic boat-tail rear taper paired with a smooth gilding metal jacket, significantly reducing drag in flight and ensuring stable rotation out of standard 1:7, 1:8, and 1:9 twist barrels. PPU seats these projectiles in factory-new, heavy-walled brass cases charged with temperature-stable propellants and non-corrosive, sealed boxer primers, providing dependable waterproofing and long shelf life for emergency reserves.
On the range, expect snappy, reliable cycling and clean extraction across short-barreled rifles (SBRs), standard 16-inch carbines, and full-length gas systems. Delivering muzzle velocities around 3,240 FPS from a 20-inch barrel, this load generates the ideal gas volume to cycle mid-length and carbine gas ports effortlessly, locking the bolt back on the final round every time. The uniform brass dimensions make it a favorite for handloaders looking for high-quality 5.56 brass to re-prime and re-use down the road.
Armorer Bench Notes & Technical Maintenance Guidance
Shipping Restrictions: Ammunition sales are strictly regulated. Check all state and local laws prior to ordering. Cannot ship to PO Boxes, APO/FPO addresses, or internationally. Must ship via ORM-D / Hazardous Ground transport.
Armorer Tip: This is a true full-pressure 5.56x45mm NATO loading. Ensure your firearm's barrel is chambered for 5.56 NATO or .223 Wylde before firing. Do not fire full-pressure 5.56 NATO rounds in tight commercial .223 Remington chambers, as higher NATO pressures can cause sticky extraction or blown primers. Regularly inspect your AR-15 bolt tail and extractor spring for carbon build-up after high-volume range trips to maintain positive extraction cycles.
Key Features
- Full NATO Specification: Loaded to true 5.56x45mm NATO pressure parameters for crisp, reliable semi-automatic and full-auto cycling.
- Aerodynamic Boat-Tail Bullet: 55gr FMJBT design reduces downrange drag for flatter trajectories and consistent target paper scoring.
- Reloadable European Brass: Premium, new-manufacture boxer-primed brass cases drawn with uniform wall thickness.
- Weather-Sealed Primers: Non-corrosive boxer primers designed for clean ignition and long-term storage viability.
- Universal Feeding: Round-nose FMJ profile feeds smoothly across standard M4 feed ramps and metal or polymer magazines.
Product Specifications
- Brand: Prvi Partizan (PPU)
- Product Line: Range Line / Rangemaster Series
- MPN: PPR556
- UPC: 8605003821557
- Caliber / Gauge: 5.56x45mm NATO (5.56 NATO)
- Bullet Weight: 55 Grain
- Bullet Type: Full Metal Jacket Boat Tail (FMJBT)
- Muzzle Velocity: ~3,240 FPS (20-inch Barrel)
- Muzzle Energy: ~1,282 ft-lbs
- Casing Material: Brass (Reloadable)
- Primer Type: Boxer (Non-Corrosive)
- Box Quantity: 20 Rounds per Box
- Case Quantity: 1,000 Rounds (50 Boxes)
