Yankee Hill Machine | NIELSON Booster Assembly | YHM-2055

The Yankee Hill Machine NIELSON Booster Assembly (YHM-2055) replaces a direct-thread adapter on suppressors that use a 1-3/8″-24 mount and is intended for use with handguns that require a Nielsen-style booster. This assembly is manufactured from 17-4 stainless steel and is supplied without a piston; it installs in place of a direct-thread adapter to accept compatible Nielsen pistons. Compatible piston brands listed by the manufacturer include Silencerco, Rugged, and Deadair Odessa.

Common applications include suppressed handgun target shooting and pistols used for precision or competition training where a Nielsen-style recoil booster is required.

Product Specifications

• The manufacturer is Yankee Hill Machine.
• The model is listed as Nielson (spelling per provided manufacturer strings).
• The manufacturer part number (MPN) is YHM-2055.
• The mount thread pitch is 1-3/8″-24.
• The material is 17-4 Stainless Steel.
• The finish is listed as Matte Black in attribute data.
• The package dimensions are 2.15 x 5.15 x 7.80.
• The product type is Adaptor.
• The color is Black.
• The assembly ships with no piston included.
• Compatible piston brands include Silencerco, Rugged, Deadair Odessa.
• This component is intended for handgun calibers only, per manufacturer notes.
• The item weight is listed as 0.28 (unit not specified in source data).
• The package width is 5.2, package length is 8.0, and package height is 2.3 (values per provided attributes).
• The UPC is 841812101215.

This booster assembly lets you convert a direct-thread suppressor mount to accept Nielsen-style pistons where applicable. It is a purpose-built adapter for suppressed handgun applications and is built from corrosion-resistant stainless material for durability. Note that the piston required to complete the booster system is sold separately.