This vise block provides a stable “third hand” when working on AR-15/M16 lower receivers. It clamps into a bench vise and is inserted into the lower receiver’s magazine well, where it is retained by the magazine catch. The block is made from black injection-molded polymer for repeated workshop use. Designed to simplify installation and maintenance of lower-receiver components.
Key Specifications
- Product type is Vise Block intended for lower-receiver work.
- Designed to fit Lower Receiver magazine wells on AR-15/M16 style platforms.
- Constructed from Polymer for a balance of durability and receiver protection.
- Finished in Black to blend with common workshop fixtures and firearms.
- Country of origin is listed as US.
- Weight is listed as 0.4.
- Overall length is listed as 5.
- Overall width is listed as 2.25.
- Overall height is listed as 0.75.
- Package weight is listed as 0.4.
Compact and straightforward, the PM123 vise block is a practical addition to any gunsmithing bench or home workshop. Its polymer construction protects the receiver while providing a secure hold in the magazine well, making routine installation and maintenance tasks faster and easier. For those who perform regular lower-receiver work, this block is a dependable, low-profile tool that simplifies common procedures and saves time.





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