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RetroArms Silencer Centering Insert – 32 mm is a practical solution for stabilizing the inner barrel inside a silencer or outer barrel. Made of 3D-printed PLA, it has a 32 mm outer diameter, an 8.5 mm opening and a height of 18 mm. Its helical design makes insertion easier and helps secure it firmly in place once the inner barrel is inserted.

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The RetroArms centering insert is designed for silencers or outer barrels with suitable internal dimensions, where it helps center and stabilize the inner barrel. The insert has an outer diameter of 32 mm, an 8.5 mm opening for the inner barrel and a height of 18 mm. Thanks to its carefully designed helical shape, it can be inserted into the desired position without moving freely afterwards. Once the inner barrel is passed through the central opening, the insert expands slightly and secures itself in position. The insert is made of 3D-printed PLA and can be useful, for example, with sniper rifles featuring a longer inner barrel extending through an outer component or silencer.
The insert helps center and stabilize the inner barrel inside a silencer or outer barrel.
The specific shape allows the insert to be easily positioned in the desired location while limiting unwanted movement.
Once the inner barrel is inserted, the insert expands and helps secure it in the selected position.
The 32 mm outer diameter is complemented by an 8.5 mm opening for the inner barrel and a height of 18 mm.
The insert is made using 3D printing from PLA, allowing for its specific flexible helical geometry.
It is used to center and stabilize the inner barrel inside a silencer or outer barrel and limits unwanted lateral movement.
This version has an outer diameter of 32 mm. We therefore recommend measuring the internal space of the silencer or outer barrel where the insert will be installed before purchase.
The helical design limits free movement once the insert is installed. When the inner barrel is passed through the opening, the insert expands and seats more firmly in the selected position.
The insert has a central opening with a diameter of 8.5 mm. Before installation, check the outer diameter of the specific inner barrel as well as the available space inside the silencer or outer barrel.
| Variants | 32 mm |
| Body/receiver material | ABS / Plastic |