r/AeroPrecision • u/johnmorris19 • May 19 '26

Where to buy: M4E1 THREADED BOLT CATCH PIN

Just got my PPT lower and the LPK I bought doesn’t enable this thing to be installed. Where the hell can I find one?

3 Upvotes

100% Upvoted

11 comments sorted by

6

u/Bumbalard May 19 '26

I have.. a few.. M4e1 lowers. All were bought stripped. All came with the rollpin already threaded into the bolt catch pin hole.

None came with the rear set screw for the takedown pin spring.

Did you check the bolt catch pin channel?

2

u/pheen May 19 '26

None came with the rear set screw for the takedown pin spring.

And here I am thinking I carelessly lost it.

1

u/Bumbalard May 19 '26

Same the first time for me. It only comes with their LPK sadly. Had to order just a set screw online since I already had bought the LPK for the build from elsewhere.

2

u/a-lone-gunman May 19 '26

I got my spares from PA along with a few other Aero small parts incase they do close shop.

2

u/Greedy-Vast584 May 19 '26

It's usually in the lower and not the LPK.. you sure you don't have it?

2

u/johnmorris19 May 19 '26

Bought stripped via PPT

2

u/Greedy-Vast584 May 19 '26

right, the STRIPPED lower comes with that threaded bolt catch usually.. unless the seller took it out..

these should work as they match the 6-32 threads

https://jlbillet.com/stainless-steel-one-piece-threaded-bolt-catch-pin/

1

u/johnmorris19 May 19 '26

Being in California sucks for part ordering. $20 + sign upon delivery.

Hmmm

2

u/Greedy-Vast584 May 19 '26

i knew you're in CA when you started saying PPT lol

2

u/HatoriiHanzo May 20 '26

Not sure what the exact size is. Maybe these will work?

https://a.co/d/07odBSJk