Surplus AR180B Parts at

Just a quick heads up that I’ve got some surplus 180B parts in stock and ready to go.

Biggest and hardest to find parts are complete bolt carrier groups. I’ve been able to put together a few of these and I don’t know if I’ll ever be able to source all these parts again. By the way these can be machined to work in an original AR180 if needed. I don’t provide the service but any competent machinist or gunsmith can help you out.

Another item that has been asked about a lot are original extended length hammer and trigger pins. These are new old stock Armalite production, as are all these parts.

Take a look around and see if there is anything you might need to finish a build or to have spares.

Heading to SAR West

I’m getting a couple table and setting up in the SAR building this year. I’ll be there Friday, Saturday, and Sunday.

I’ll have lots of stuff to show and to sell so come find me if you happen to be there this year.

I’m Reposting Content to Twitter/

I just wanted to give everyone a heads up that I am reposting my original blog posts over to Twitter/

I’ve been having some issues with other social media platforms shadow banning me so I’m doing this to hopefully build my audience over there.

First post is live.

Jump over there for a trip down memory lane or see my older content for the first time.

Please follow, like and share my stuff over there. I can’t do this without your support.

Thanks again.



Updated Product and a Sale at

Just a quick note to my subscribers.

Updated charging handles for the BRN-180 series of uppers are now in stock and shipping.

They have been made slightly longer to ensure no clearance issues with the dust cover as well as the addition of an o-ring to limit unwanted rattling.

There is also a sale going on for the rest of the month of July. Cone flash hiders are $10 off. No coupon needed.

Thanks for supporting the site with your purchases. It keeps this information available for all the fans of the AR180 platforms.

This is How We Roll — Pin

I’ve received some emails lately about roll pin availability for the original AR-180’s. I decided to take a deep dive into the subject and I am happy to report that we should be able to source our roll pins by using or modifying AR15 roll pins.

Lets start with the largest roll pin on the AR180, the magazine catch pivot. It is .094″ in diameter and .562″ long. You should be able to make use of an AR15 trigger guard roll pin. It is .093x.625. Most of them are super tight in a trigger guard so I don’t see any reason they wouldn’t work. They would just need to be cut down.

Next we have the ejector retaining pin. It is exactly the same as what is used in an AR15 bolt. They both measure .062x.437. By the way, all the ejector and extractor parts from an AR15 bolt can be used in your AR180 bolt.

Two of the same pins are used in the bolt catch and the bulkhead plungers for the butt stock. They measure .062x.312. The closest thing from an AR15 is an A2 windage knob roll pin. It measures .062x.375. Take a little off the top and you will be good to go.

Finally the guide rod retaining plunger and the dust cover use a .062x.250 roll pin. The exact roll pin is used in A1 rear sight drums.

These roll pins can also be ordered in the exact size needed but often you are buying them in bulk to get one or two. Repurposing AR15 roll pins might be a better way to go for some folks.

I’ve considered doing just that. Ordering all the sizes needed for the AR180 and selling them as a kit. Let me know in the comments below, would you buy one?