Making a 9mm-5.7mm chamber insert
This video details the process of making a chamber insert that can convert a 9mm pistol to 5.7x28mm. Testing of the chamber insert can be seen here: • World’s smallest 5.7 pistol
This video details the process of making a chamber insert that can convert a 9mm pistol to 5.7x28mm. Testing of the chamber insert can be seen here: • World’s smallest 5.7 pistol
