AR Lower Disassembly

[Bazooka Joe71]

I got my new trigger springs today for my LR-308, and since I bought my AR 15 assembled, I'm having a bit of trouble disassembling the lower.

I went to AR15.com, and it shows how to assemble a lower, but reading the instructions in reverse is a bit troublesome...Does anyone have some disassembly instructions for a fella?

 

[Omnivore]

I'm sorry if this sounds a bit "smartass" but if you have to ask, you probably shouldn't be doing it. Really. Instead, find someone with real experience, who will do it and show you what's going on at the same time.

This coming from a man who has been doing repairs for 30+ years: Owner-performed repair or refit = more and unpleasant work for the professional.

Just sayin. Been there and done that a thousand times in the musical instrument business.

I also know full well that saying this will probably not change a single thing. Been there too, another thousand times.

 

[Bazooka Joe71]

Instead, find someone with real experience, who will do it and show you what's going on at the same time.

If I had that luxury, why would I be here?

All I need are detailed picture instuctions and I'll get it done.

 

[rbernie]

You don't have to disassemble much to replace trigger springs.

The trigger group is held in place by two floating cross pins. The front pin holds in the hammer and the rear pin holds in the trigger/disconnector.

What are you trying to specifically do?

 

[Bazooka Joe71]

Get the front pin out...It's not budging.


Edit: Got it.

 

[rcmodel]

Get a bigger hammer!

Both pins are held in by a groove in the center that the spring ends ride in.
You just have to hit them hard enough with a punch to pop the springs out of the center groves, and then they will almost fall out.

BTW: Some oil on the centers of them first might help!


rcmodel

 

[JCUMM2]

This is an easy job.
First remove the hand grip being careful not to loose the spring where the grip mates with the receiver. Next pull out the rear retaining pin that holds the upper and lower receivers together. Then tilt the upper forward.
Now slide out the safe/fire selector. Now remove the hammer and trigger pins.
The hammer and trigger can now be removed. Be careful to note how everything came apart. Reassembly is the reverse. The trigger spring needs to be compressed as it sits on the floor of the lower receiver. The hammer springs must sit in the groove on top of the tigger pin. Be careful to keep the springs in place and compressed as you screw the hand grip back on.

 

[Bazooka Joe71]

Thanks guys...That wasn't bad at all...Hardest part was getting those pesky little pins back in.

Well, it's no Jewell, but just dry firing one time I can tell it is a huge difference...Can't wait to get to the range.

 

[MarshallDodge]

I have an LR308 and have been thinking about replacing the trigger springs. The only thing that has been keeping me from doing it is that I have heard about light primer strikes after replacing them.

I would be interested in your experience at the range.

 

[Bazooka Joe71]

I have an LR308 and have been thinking about replacing the trigger springs. The only thing that has been keeping me from doing it is that I have heard about light primer strikes after replacing them.

I would be interested in your experience at the range.

I'll let you know as soon as I get out there...I can tell you if you ordered them and they don't work, all it is going to cost you is $10.00 and 30 min.

Before I reattached the upper, I kept my thumb close to the hammer and dry fired several times, and I am pretty sure that is more than enough to strike the primer hard enough.