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Posted: 6/19/2026 5:20:43 PM EDT
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In my initial batch of Form 1 projects, I had submitted to SBR my Beretta CX4. Took close to 60 days for approval. Always had been my goal to make it closer to its original purpose; similar to Battlestar Galactica Colonial Marines. Years ago had, Class 3 Machining did a great job of threading my CX4, but it was time to shorten it. Even added Sierra Papa trigger and bolt work to improve it. Sent it off to US Machine Gun, who did great work chopping the barrel down and rethreading. Took around 2 months for them to knock out the work. Just got the upper back recently and now time to try it out. Now time to deal with some toasters! Attached File Difference a few inches make. Attached File |
I too am lost, I feel double-crossed & I'm sick of
Joined:
Mar 2008
Posts:
5915
EE: 100% (613)
MI, USA
| Sweet, Very tempting. I have a 9 & 45 I don’t shoot much, so why not? What did the cut and tread cost? |
The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government. - Thomas Jefferson
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Ran me about $230 to have US Machinegun cut, thread, and ship back. Plus shipping it out to Arizona. Probably all told, around $250-275 for the work. Not cheap, but seems to be solid work. Also looks nicer. |
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Old pic, has a Pimary Arms RDS now. Thing shoots awesome at 50 yards. Good fit for a lefty also. Has the Sierra Papa trigger housing and trigger parts. Attached File |
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