Takedown Detent Spring

[lrdchivalry]

Hey everyone. I was wondering if any gunshops in San Diego sell the takedown detent spring. I am building my OLL and ended up bending and breaking the spring putting my CAA 6 position stock on, any help is appreciated.

Thanks,
David

[wildcard]

As a last resort, you can always get it direct from Stag.

[lrdchivalry]

As a last resort, you can always get it direct from Stag.

True.. I was hoping somewhere in SD would have them, since it would probably cost more for shipping then the spring.. I may need to buy a few just in case.

[MudCamper]

You could order one of these:

http://www.bushmaster.com/catalog_parts_lower_receivers_p2.asp#CPKIT

It's the "Lost Parts" kit - the most commonly lost (sprung accoss the room) parts. Always good to have a few spares.

[TKM]

I've tapped a few of my lowers and use 1/4 inch ss setscrews to secure cutdown springs rather than chase them around every time I swap furniture.

I think the ARFCOM guys came up with the idea. So far, so good.

[rue]

I have a few spare springs if I happen to have it do you want me to send it to you? Pm me if so and I'll ship it out asap.

[Nefarious]

You can get one from Gusslers in Santee ...he stocks misc lpk parts
You can get his contact info in the FFL thread

[chuck762]

I've tapped a few of my lowers and use 1/4 inch ss setscrews to secure cutdown springs rather than chase them around every time I swap furniture.

I think the ARFCOM guys came up with the idea. So far, so good.

1/4 inch? Don't you meant something more along the lines of 4-40?

[Prowler]

Springs...

I've tapped a few of my lowers and use 1/4 inch ss setscrews to secure cutdown springs rather than chase them around every time I swap furniture.

I think the ARFCOM guys came up with the idea. So far, so good.

That's a great idea. Thank for the tip!

[lrdchivalry]

Thanks for all the help everyone.. Replacement in the works.

[TKM]

Oops, sorry. I should have been paying attention to what I said instead of what I meant.

The set screws are 4-40, a quarter inch long. When I'm putting steel into aluminum I try to give it as much gripping area as possible to reduce the load on the relatively fragile aluminum threads. I really don't want to strip out a hole in my lower.

Anyway it goes like this. Get a 4-40 tap, a 1/4 inch 4-40 setscrew, a ruler and some blue loctite.

Put some tape on the tap leaving 1/4 inch of the business end showing. Oil it up and tap (slowly and carefully, no drill!!!!) the detent pin hole on the rear of the receiver 1/4 inch deep. Stop when you get to the tape. Clean out the hole thoroughly.

Take the detent spring and measure 1/4 inch from one end. Cut it off. This is now the right length for the modified hole.

Assemble the detent, spring and pin assembly and carefully thread the setscrew in until it is even or slightly lower than the surface of the receiver. Check to see if the pin is held securely and that there isn't any slop or anything obviously wrong.

When you're happy with the results go ahead and loctite the setscrew.

No more chasing that damn spring......

[AlohaRover]

copy,paste,save

Thanks for the awesome tip.
Pete

When you're happy with the results go ahead and loctite the setscrew.

My only thought is that you don't need LT since the retaining plate is going to prevent the set screw from unscrewing.

[ar15barrels]

The set screws are 4-40, a quarter inch long.

MUCH longer than necessary.
I use regular 1/8" long 4-40's for this.
Remember that the setscrew is not really doing anything when the stock is installed if you install the setscrew flush to the rear face of the receiver.