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 How much force should be needed to install the roll pins on a stripped lower?
Bassgasm  [Team Member]
2/23/2012 5:06:20 PM EST
This is my first build, and I'm a bit baffled here. I'm working on the bolt catch now. I really feel like I'm going to break some shit.

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hertboi2010  [Team Member]
2/23/2012 5:08:13 PM EST
Did you put some type of lubricant on it? It's a bitch to get started but once you get it started it should go in.
Bassgasm  [Team Member]
2/23/2012 5:08:56 PM EST

Originally Posted By hertboi2010:
Did you put some type of lubricant on it? It's a bitch to get started but once you get it started it should go in.

A bit of Rem-Oil.
Trempel  [Team Member]
2/23/2012 5:09:05 PM EST
Small hammer, needle nose pliers and electric tape are your friends. And don't rush it.
stockshift  [Team Member]
2/23/2012 5:10:26 PM EST
Should not take much force at all. Still I would recommend using painter's tape on the receiver (to protect the finish) and needlenose pliers to gently "clamp" the pins into place. If you have to use excessive force I would get a new LPK ... something doesn't sound right. I use RRA LPKs and have never had a problem, FWIW.
JVD  [Member]
2/23/2012 5:10:35 PM EST
don't scuff your receiver

hertboi2010  [Team Member]
2/23/2012 5:12:05 PM EST
Originally Posted By Bassgasm:

Originally Posted By hertboi2010:
Did you put some type of lubricant on it? It's a bitch to get started but once you get it started it should go in.

A bit of Rem-Oil.


It will go in. Like Trempel said below just take your time. You doing it with a hammer and punch? I start mine with pliers and then finish it with a punch and hammer.
Bassgasm  [Team Member]
2/23/2012 5:12:24 PM EST

Originally Posted By stockshift:
Should not take much force at all. Still I would recommend using painter's tape on the receiver (to protect the finish) and needlenose pliers to gently "clamp" the pins into place. If you have to use excessive force I would get a new LPK ... something doesn't sound right. I use RRA LPKs and have never had a problem, FWIW.

Almost all my stuff is from Del-Ton. The only part of my kit that's not Del-Ton is a RRA NM trigger.
9mmRandy  [Team Member]
2/23/2012 5:12:26 PM EST
They are a bitch. If you look in the build section they show a trick using vise grips to press them in. That works well.
hertboi2010  [Team Member]
2/23/2012 5:12:49 PM EST
Originally Posted By Bassgasm:

Originally Posted By hertboi2010:
Did you put some type of lubricant on it? It's a bitch to get started but once you get it started it should go in.

A bit of Rem-Oil.


It will go in. Like Trempel said below just take your time. You doing it with a hammer and punch? I start mine with pliers and then finish it with a punch and hammer.
ARJJ  [Team Member]
2/23/2012 5:12:56 PM EST
Once you get the bolt catch roll pin started, some steady taps from the hammer will get it there. The triggerguard roll pin can be a mutha. I had to BEAT on the one that came with my last DPMS LPK. I was scared to death I was gonna break the triggerguard ear.
VBC  [Team Member]
2/23/2012 5:13:34 PM EST
It's a little trickier than it seems huh?

I used a pair of vise grips to work the pin into the receiver for the bolt catch, just like in the tutorial in the build forum. I still ended up marring a little spot because my vise grips were a little rough and cut through the tape.
LORD-eX-Bu  [Member]
2/23/2012 5:13:57 PM EST
if you're using the correct punch it shouldn't take much.
9mmRandy  [Team Member]
2/23/2012 5:14:49 PM EST
Originally Posted By 9mmRandy:
They are a bitch. If you look in the build section they show a trick using vise grips to press them in. That works well.


Heres a link to the build area with the vise grips.
http://www.ar15.com/forums/t_3_4/226782_Assemble_your_own_LOWER__UPPER__FREE_FLOAT__TRIGGER__GAS_BLOCK___Step_by_step_instructions_.html

hertboi2010  [Team Member]
2/23/2012 5:15:26 PM EST
Originally Posted By ARJJ:
Once you get the bolt catch roll pin started, some steady taps from the hammer will get it there. The triggerguard roll pin can be a mutha. I had to BEAT on the one that came with my last DPMS LPK. I was scared to death I was gonna break the triggerguard ear.


I screwed my first lower up doing this. I found if you put the front pin in first the back one is cake to install!
emsjeep  [Member]
2/23/2012 5:15:30 PM EST
Originally Posted By LORD-eX-Bu:
if you're using the correct punch it shouldn't take much.


I bought a roll pin set after I learned that I really needed them somewhere around my third build.
stockshift  [Team Member]
2/23/2012 5:15:43 PM EST
Originally Posted By Bassgasm:

Originally Posted By stockshift:
Should not take much force at all. Still I would recommend using painter's tape on the receiver (to protect the finish) and needlenose pliers to gently "clamp" the pins into place. If you have to use excessive force I would get a new LPK ... something doesn't sound right. I use RRA LPKs and have never had a problem, FWIW.

Almost all my stuff is from Del-Ton. The only part of my kit that's not Del-Ton is a RRA NM trigger.


Hm. I have no experience with Del-Ton gear so I can't really say. It really should not take a ton of force. Hope everything works out.
TooBigToFail  [Team Member]
2/23/2012 5:18:15 PM EST
You shouldn't have to bash the shit out of it. The key is getting it lined up properly and giving it a good, solid whack to get it started. It really helps if you have another set of hands.
kelone  [Member]
2/23/2012 5:20:35 PM EST
vise grips as shown in the guide here - works like a charm
Tim_McBride  [Team Member]
2/23/2012 5:22:42 PM EST
Roll Pin Starter Punch and Roll Pin Punches.......
Drexel_Spivey  [Member]
2/23/2012 5:30:37 PM EST
It sounds like it's a split roll pin. Take a channel locks & squeeze it to taper one end.

There are two different 'roll pins'. The cheapies are the split roll pins & the 'butter' pins are the spring pins. The spring pins look like coils, & the split pins look like the 'roll' pins you find at the hardware store. For example, CMMG has split roll pins & Spike's has spring pins in their LPK's as of now.
Bassgasm  [Team Member]
2/23/2012 5:34:26 PM EST
Vice Grips = Win.

Time for the takedown pins....
Furious  [Team Member]
2/23/2012 5:36:24 PM EST


Take the roll pin and compress one end of it so it sits into the hole with only finger pressure. Then use the vise-grip method and SLOWLY press it in. A medium set of channel-locks works better for me. Cover the entire area of the lower with painters tape (green works best) and then electrical or duct tape over that. Tape the ends of the pliers as well.


CAUTION: Good men have cried after scratching their new lowers trying to do this.







Furious  [Team Member]
2/23/2012 5:40:38 PM EST
Originally Posted By Bassgasm:
Vice Grips = Win.

Time for the takedown pins....


You'll shoot your eye out kid!

Seriously. Take it slow with the front detent.





redoubt  [Member]
2/23/2012 5:44:50 PM EST
Originally Posted By Furious:
Originally Posted By Bassgasm:
Vice Grips = Win.

Time for the takedown pins....


You'll shoot your eye out kid!

Seriously. Take it slow with the front detent.







Work in a white kitchen garbage bag. It'll catch the detent when it goes flying.
vanrichten  [Team Member]
2/23/2012 5:52:25 PM EST
I squeeze one end of the pen, it helps a lot. Also have a lower vice block to hold the lower steady helps greatly to give you that extra set of hands. I use punches instead of the vice grips, but those work too.
flyfishnepa  [Team Member]
2/23/2012 5:57:12 PM EST

IBABTGE

(in before a broken trigger guard ear)

Unique1  [Team Member]
2/23/2012 5:57:49 PM EST

Originally Posted By Furious:
Originally Posted By Bassgasm:
Vice Grips = Win.

Time for the takedown pins....


You'll shoot your eye out kid!

Seriously. Take it slow with the front detent.






What he said!!! ^

Find the smallest room in your house, remove EVERYTHING from the room. Put strong lights in the room. Now, try to put that front detent in. when it goes SPROING! you can find it easier within an empty room.


ETA. do not do like a lot of people do and cut off a few coils of the spring. This makes it go in a LOT easier, but it would be cheating.
Bassgasm  [Team Member]
2/23/2012 5:58:54 PM EST

Originally Posted By redoubt:
Originally Posted By Furious:
Originally Posted By Bassgasm:
Vice Grips = Win.

Time for the takedown pins....


You'll shoot your eye out kid!

Seriously. Take it slow with the front detent.







Work in a white kitchen garbage bag. It'll catch the detent when it goes flying.

Meh. Front pin was cake. I've got it in, the FCG is in, the safety is in, and the grip is on. I'm working on the buffer stuff now.
Winn  [Team Member]
2/23/2012 6:12:08 PM EST
Originally Posted By ARJJ:

Once you get the bolt catch roll pin started, some steady taps from the hammer will get it there. The triggerguard roll pin can be a mutha. I had to BEAT on the one that came with my last DPMS LPK. I was scared to death I was gonna break the triggerguard ear.


Bassgasm  [Team Member]
2/23/2012 6:23:49 PM EST
Done.

I just posted pics in my original thread from when I ordered it: http://www.ar15.com/forums/t_1_5/1285261_.html&page=1
jrzy  [Team Member]
2/23/2012 6:26:08 PM EST
My Son Brian installs 10 LPK's in 28 minutes
I'm still looking for parts that went flying in 28 minutes.

Clutch1911  [Team Member]
2/23/2012 6:27:28 PM EST
should have just bashed it with a hammer. I picked up a free lower a couple weeks back....some ahole broke off the ear....I just jb welded it for that thrown down the driveway look.
TheNamelessOne  [Team Member]
2/23/2012 6:44:25 PM EST

Originally Posted By redoubt:
Originally Posted By Furious:
Originally Posted By Bassgasm:
Vice Grips = Win.

Time for the takedown pins....


You'll shoot your eye out kid!

Seriously. Take it slow with the front detent.







Work in a white kitchen garbage bag. It'll catch the detent when it goes flying.

i sent mine flying across my living room, i have no idea how i found it but i did.

Bassgasm  [Team Member]
2/24/2012 5:55:15 PM EST

Originally Posted By Clutch1911:
should have just bashed it with a hammer. I picked up a free lower a couple weeks back....some ahole broke off the ear....I just jb welded it for that thrown down the driveway look.

I bashed it to the limit of my comfort. It wasn't working too well.
Keith_J  [Life Member]
2/24/2012 5:58:14 PM EST
I made a tip for an automatic center punch to install these small pins. I also made a short collar from thin brass tube to fit over the punch to hold the pin for starting. You only need one hand to drive the pin.
BigWes64  [Member]
2/24/2012 6:14:36 PM EST
I used the vise grip trick with tape and lube. It worked great.
69charger  [Team Member]
2/24/2012 6:17:09 PM EST
Squeeze the end of the pins a bit and use a good lube. I used a dab of Neco Moly-slide.
molardog  [Team Member]
2/24/2012 6:22:38 PM EST
I just used a copper punch and hammer on mine.....works great and won't mushroom the roll pin like hitting it with steel will.
gwitness  [Team Member]
2/24/2012 6:36:49 PM EST
I ordered the "critical tool" kit from Brownells...came with the armorers wrench, upper receiver clamp, lower receiver block, a punch designed for knocking in the bolt hold roll pin, and a couple small tools for installing the front take down pin, a member here made up some really nice roll pin starters and sold me a set. makes it easy when you're using the correct tools.

eta..http://www.brownells.com/.aspx/pid=41214/Product/AR-15-M16-CRITICAL-TOOLS-KIT
The_Gooch  [Team Member]
2/24/2012 6:51:47 PM EST
Real, high quality roll pins from kits like RRA go in easy. They are tapered on each end and are rolled into a coil. Cheaper kits like DPMS have split pins, which are just a piece of steel rolled until the two edges are butted together, and they have very little taper on the ends.
MIDGAPATRIOT  [Team Member]
2/24/2012 6:55:13 PM EST
Originally Posted By BigWes64:
I used the vise grip trick with tape and lube. It worked great.


Yep.
krpind  [Life Member]
2/24/2012 6:59:13 PM EST
Roll pin starters and punches.
Dagger41  [Member]
2/24/2012 7:05:54 PM EST
Have fun OP, you will learn alot.
Try learning one backwards, as in taking a fully assembled lower and upper and stripping down to the last pin,spring, detent doohickey and roll pin without losing any parts.
You will think that whoever designed this rifle was absolutely nuts and a government employee.
All of a sudden, a moment of clarity will set into your brain and you will feel like a genius and pat yourself on the back that somebody actually took every idea that you had about a simple but leathal battle rifle and made it right, just the way you like it.

TAKE YOUR TIME AND LEARN AS YOU GO

Sorry for the caps, I hope you understand.


AR15fan  [Team Member]
2/24/2012 7:22:44 PM EST
I had a simular problem with DPMS roll pins. I simply do not use their pin anymore.
sleepdr  [Team Member]
2/24/2012 7:27:37 PM EST
Either my lower or the no-name-brand peak-of-panic-buying kit's bolt catch roll pin was out of spec.

It was a hateful, frustrating event despite lube, proper punch size, and vise grips. It punched holes in the vise grip rubber booties did on the EE to protect the lower.

Posted Via AR15.Com Mobile
Banjaxed  [Team Member]
2/24/2012 7:33:07 PM EST

Originally Posted By Furious:
Originally Posted By Bassgasm:
Vice Grips = Win.

Time for the takedown pins....


You'll shoot your eye out kid!

Seriously. Take it slow with the front detent.






I just press it down with the blade of an Exacto Knife. Thin enough you can hold the detent in the hole and slip the pin in over top of it. Once the pin is in place remove the blade and the detent pops into place. I have not lost a detent or spring yet with this method.
Banjaxed  [Team Member]
2/24/2012 7:37:05 PM EST

Originally Posted By BigWes64:
I used the vise grip trick with tape and lube. It worked great.

Channel Locks, lots of tape, and lube does it for me.
Hunters_Moon  [Member]
2/24/2012 7:42:54 PM EST
Originally Posted By AR15fan:
I had a simular problem with DPMS roll pins. I simply do not use their pin anymore.


I have had some DPMS LPKs that use split pins instead of roll pins. They are not the same thing.
Garandboy  [Team Member]
2/24/2012 7:54:56 PM EST
Depends. With a PSA, DD, or RRA LPK. Not much effort at all. With a DPMS LPK I suggest a 12 ton press from Harbor Freight.
winxlite  [Member]
2/24/2012 8:00:06 PM EST
Originally Posted By flyfishnepa:

IBABTGE

(in before a broken trigger guard ear)



Just make sure the bottom ear is supported by the jaw of the wrench or a good solid hard surface, and make sure the top ear is supported by the trigger guard itself.
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