Curtis Custom Helix Long Action .300 PRC Bolt-Action Rifle — MPA BA Chassis, 27 in Match Barrel, TriggerTech, MPA Brake
This custom .300 PRC precision rifle is built on the Curtis Custom Helix long action and configured for stability, adjustability, and long-range performance. It features a 27 in MPA match-grade barrel with 1:8 twist and an installed MPA 30 Cal brake, set into a MasterPiece Arms BA-series aluminum chassis with an integral 1.5 in Arca/RAT dovetail. The three-lug, 60-degree throw action runs a spiral-fluted bolt with a large knurled knob, and a TriggerTech trigger is installed. A receiver Picatinny scope base, Magpul bipod, and CIP-length 3.850 magazine complete the setup.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Specific Condition Details: The rifle shows some very mild scuffs and wear, and it is in great shape for competition or hunting big game.
Bore Overall Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
What's Included
- Magpul bipod (installed)
- TriggerTech trigger
- MasterPiece Arms BA-series chassis with RAT Rapid Adjustment Technology (installed)
- MPA Barrels .300 PRC 1:8 Twist Match Grade Chamber barrel
- MPA 30 Cal Brake (installed)
- 1x 5-round detachable steel box magazine stamped '300 WM (3.850)' and 'USA'
- Adhesive barrel temperature-indicator strip (86–140°F/30–60°C scale)
The Curtis Custom Helix long action anchors this build with a three-lug bolt and 60-degree throw on a Remington 700 footprint. The bolt body is spiral-fluted and capped with a large knurled knob for positive manipulation. A receiver-mounted Picatinny scope base is installed for mounting solutions.
The 27 in MPA .300 PRC barrel uses a match-grade chamber and a 1:8 twist. The barrel is threaded at the muzzle and fitted with an MPA 30 Cal brake. Barrel rollmarks read "300 PRC 1:8 Twist — Match Grade Chamber" and "MPA BARRELS" with the MPA shield. An adhesive temperature-indicator strip is applied to the barrel.
Its MasterPiece Arms BA-series chassis is machined from 6061 aluminum and finished in green. The forend includes an integral 1.5 in Arca/RAT dovetail and short Picatinny rail sections, plus a front spigot area. The chassis offers an adjustable cheek riser, a multi-axis buttpad with height and cant adjustments via thumbwheels, a rear bag rider, and a vertical, heavily textured pistol grip. Length of pull is set at 14.25 in.
The detachable box magazine system is configured for a stated capacity of 5+1. The included 5-round steel magazine is stamped '300 WM (3.850)', indicating CIP-length compatibility with this build. The rifle carries a matte black finish with the chassis in green, and it is made in the USA. A Magpul bipod and TriggerTech trigger are installed.