MPA comp chassis

[NJRaised]

MPA COMP chassis as stated. I have my magazines seated as high as they will go and they seem to be running better.

Here’s my question, no matter how hard I turn that 1/16” Allen key to adjust the magazine height, it consistently keeps finding its way slipping down, until my rounds don’t feed. The screw is still tight, but the magazine adjuster (I have no clue what it’s technically called) keeps lowering.

Any ideas on how to keep it anchored down and not move?

 

[Yoteski]

Some purple Loctite might work.

 

[rustyinbend]

Call the guys at MPA ... I have several of their rifles and they've always been super-helpful any time I needed support.

 

[Carl_Ross]

I've never had the adjustment stay put long with the screw. I get it adjusted how I like, wedge a small piece of something in the gap so it can't slip down, and tape over it so it doesn't come out.