Open bolt assault rifle patent
By ImproGuns
Here is an interesting patent (US4019423) for an open bolt assault rifle which looks like a cross between a STEN and an M16. A large compression spring is depicted in front of the barrel assembly which in theory will slightly delay the breech opening when struck by the bolt as a round is chambered. A […]
The post Open bolt assault rifle patent appeared first on The Firearm Blog.
Source:: The Firearm Blog
Leave a Reply