This Nielsen booster piston features heat-treated 17-4 stainless steel construction with 1/2x28 threading for 9mm applications. The piston includes 10 index points for point-of-impact tuning and is compatible with YHM Booster Assembly, YHM Sidewinder M2 suppressors, and many popular pistol suppressors. Interchangeable with pistons from YHM, SilencerCo, Rugged, and Dead Air Odessa pattern. Made in the USA.
The 10 index points allow precise point-of-impact adjustment by rotating the piston to different indexed positions. This feature accommodates variations in barrel threading, suppressor alignment, and shooting preferences.
The heat-treated 17-4 stainless steel construction provides corrosion resistance and durability under sustained suppressed fire. The material withstands high-pressure gas cycling while maintaining dimensional stability.
This piston is interchangeable with pistons from YHM, SilencerCo, Rugged, and Dead Air Odessa pattern suppressors, allowing compatibility across multiple suppressor platforms that use the Nielsen booster system.
The 1/2x28 threading matches standard 9mm barrel threads. This piston is compatible with YHM Sidewinder M2 suppressors but not compatible with the original YHM Sidewinder suppressor.
Verify compatibility before use. Ensure secure mounting before operation. Use only in accordance with applicable laws.
Product Type: Nielsen (booster) piston
Thread Pitch: 1/2 x 28
Caliber Compatibility: 9mm
Compatibility: YHM Booster Assembly (YHM-2055), YHM Sidewinder M2 suppressors, and many popular pistol suppressors
Weight: 1.40 oz
Material: Heat-treated 17-4 Stainless Steel
Adjustment: 10 index points for point-of-impact tuning
Interchangeability: Compatible with YHM, SilencerCo, Rugged, and Dead Air (Odessa-pattern) pistons
Country of Origin: Made in USA
Notes: Compatible with Sidewinder M2 suppressors; not compatible with the original Sidewinder
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