u/Reppoc1

Left has the farrowtech ft7 kit with an ab littlebird 22 can

Right has a Gideon omega red dot, the harbor freight weapon light, and the hi point hush22 can

After a bit of troubleshooting and referring to a post made by someone who did all the hard work for me:

https://www.reddit.com/r/supersafety/s/8nLl2zGmX0

I’m leaving this post as a quick reference and summary for how I got mine to work.

Firstly I had my bolt cut by a machine shop to the specs that seemed to be the standard used for it to work like a normal m16 cut ar bolt.

And lastly I needed to sand down the top flat part of the lever as leaving it as is was causing it to bind when the bolt cycled locking the whole gun and requiring me to remove the grip and detent to pull the safety out of the gun to separate the upper and lower.

I just got my ar57 bolt back from getting cut at adco firearms to use in my arc fire lower and it seemed to reset fin when charging it by hand but when I took it to the range the bolt got stuck on the arc lever right between the upper and the buffer tube when running it on semi.

I couldn’t try it in super cuz I needed to take it home to take it apart with tools but I’m scratching my head at what the problem could be.

If anyone knows what my problem could be or if there is a super safety that is known to work with the 57 upper cut bolts it is appreciated

Edit: it was also doing the same binding with a Hoffman crossbolt style super safety as well