Yankee Hill Machine NIELSON BOOSTER ASSEMBLY NO PISTON - YHM-2055 - 841812101215
Product Description
Adapting universal HUB-compatible suppressors to semi-automatic handguns with Browning-type tilt-barrel actions requires a Nielsen device (recoil booster) to ensure reliable cycling. Without a booster system, the added muzzle weight of a suppressor prevents the barrel from unlocking properly, causing severe stovepipes, failure-to-eject errors, and short-stroking. The Yankee Hill Machine Nielsen Booster Assembly (YHM-2055) resolves cycling failure constraints by providing a heavy-duty booster housing, retainer cap, and high-tensile spring assembly engineered to adapt 1.375"x24 HUB-threaded suppressors for handguns.
Precision-machined from high-strength stainless steel and treated with a wear-resistant black finish, the YHM-2055 threads directly into suppressor rear bodies featuring standard 1.375"x24 Bravo / HUB thread architecture (including the YHM Nitro 30, YHM Sidewinder series, and other industry-standard HUB cans). The internal chamber utilizes standard YHM/P226-style Nielsen pistons, allowing shooters to select their specific caliber thread pitch piston separately (such as 1/2x28 or .578x28) to suit multiple host handguns.
When fired, the high-tensile internal booster spring temporarily decouples the mass of the suppressor body from the handgun barrel, providing the inertia momentum necessary for smooth slide cycling and reliable brass extraction. Engineered for heavy-duty use and easy maintenance, the YHM-2055 serves as the ideal foundation for pistol suppressor staging.
*Armorer Bench Notes & Real-World Staging Guidance:
Fitment & Suppressor Compatibility Matrix: Threads into standard 1.375"x24 TPI HUB / Bravo Rear Threads. Accepts YHM Nielsen Pistons (and compatible SilencerCo / Rugged piston footprints). Note: Ships WITHOUT a piston; appropriate thread-pitch Nielsen piston must be purchased separately based on host firearm barrel threads.
Installation Sequence:
- Safety check host firearm: remove magazine, lock slide rearward, and physically/visually inspect chamber to confirm clear weapon.
- Unscrew and remove the rear direct-thread or Q.D. adapter housing from your 1.375"x24 HUB-compatible suppressor.
- Apply high-temperature anti-seize grease to the exterior 1.375"x24 threads of the YHM-2055 assembly.
- Unscrew the rear retainer cap of the YHM-2055, insert your selected caliber piston and spring assembly, apply lithium grease to piston splines, and re-tighten the retainer cap.
- Thread the YHM-2055 booster housing into your suppressor body, torque securely, and thread the piston onto your host handgun barrel threads.
Key Features
- Universal 1.375"x24 HUB Compatibility: Converts standard Bravo / HUB threaded suppressors for semi-automatic pistol use.
- Heavy-Duty Stainless Steel Body: Precision CNC-machined to withstand intense gas erosion, heat expansion, and recoil shock.
- Modular Piston Housing (No Piston Included): Allows shooters to swap individual thread-pitch pistons for multiple handguns without replacing the main booster assembly.
- High-Tensile Recoil Spring Included: Heavy-duty spring delivers crisp momentum decoupling for flawless tilt-barrel cycling.
- Black Wear-Resistant Finish: Hardened surface finish guards against carbon fouling, corrosion, and thread binding.
Product Specifications
- Brand: Yankee Hill Machine (YHM)
- Model: Nielsen Booster Assembly (No Piston)
- MPN: YHM-2055
- UPC: 841812101215
- Thread Interface to Suppressor: 1.375"x24 TPI (HUB / Bravo Standard)
- Piston Requirement: Accepts YHM Nielsen Pistons (Sold Separately)
- Material: Stainless Steel
- Finish / Color: Black
- Included Components: Booster Body Housing, Booster Spring, Front Retainer Cap
