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Archived [ARCHIVED THREAD] - Mas defense 9mm bolt, mag block
Posted: 8/1/2015 12:39:03 AM EDT
Anyone have any feedback on the mas defense 9mm bolt and mag block? I did a search and their 223 barrels parts seem to be gtg. Looking to build a 9mm pistol/sbr.

Link Posted: 8/1/2015 12:45:49 AM EDT
[#1]
I have the bolt. Runs great, no issues with it. It was a very very very tight fit in my Anderson upper at first, but loosened up after a few rounds and now slides freely. Aesthetically, there are a few machining marks but nothing too bad. No feedback on the mag block. I'm using the mas bolt with an AMM mag block.

Archived [ARCHIVED THREAD] - Mas defense 9mm bolt, mag block
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