u/ExoticGeologist

Image 1 — AC Unity Alfa 9mm AR Parts Kit

Image 2 — AC Unity Alfa 9mm AR Parts Kit

Image 3 — AC Unity Alfa 9mm AR Parts Kit

AC Unity Alfa 9mm AR Parts Kit

If anyone is curious about the contents of the AC Unity Alfa 9mm Tinker Kits PSA had, here's what's inside.

I was surprised by the amount of plastic baggies in the bag. For example, each spring and even the washer for the grip screw had a separate baggie. Weirdly, the only things not in baggies were the takedown and pivot pins, which were thrown in with the upper to bang around with.

Some of the steel parts had some surface rust. Some of the aluminum parts had some bad machining marks. The handguard is polymer as PSA described.

u/ExoticGeologist — 4 days ago

▲ 5 r/GrandPowerStribog

After seeing different people on this subreddit recommend the factory HK UMP45 stock since the B&T stocks are out of stock, I went ahead and got one. The stock button for the UMP has a 16mm peg, while the A3 stock hole is 12mm. Without either expanding the hole on the stock adapter or filing down the peg on the stock button, the parts aren't compatible.

I wanted to make a post if anyone else scoures the Internet trying to find an answer for it like I did, as people have directly recommended the UMP stock as a direct substitute and it appears to me that is not correct.

It appears there is a STL of the button, so I'll probably just modify it and print it in PA6CF.

reddit.com

u/ExoticGeologist — 16 days ago