Machining an 80% 10/22 Receiver, Completing a Select Fire LLC RAZOR Semiautomatic Receiver
The Ruger 10/22 has become the ubiquitous semi automatic 22 rifle of this generation. Its modular construction and wide range of aftermarket parts have made it the gun customizer’s dream. In addition to the original Ruger 10/22 receivers, a number of companies offer aftermarket receivers with enhanced features. In this case, we are going to complete a Select Fire LLC RAZOR 80% receiver. This 10/22 style receiver, includes an extended optical mounting rail machined into its top. Note: even though the company that produces this receiver is called Select Fire LLC, the rifle we are constructing for our own use is a semi automatic.
If you aren’t familiar with them, 80% receivers are receiver blanks machined short of what the ATF would consider a firearm. This allows individuals to purchase and complete them, where legal, for their own personal use, without the need of transferring the item through an FFL. Prior to proceeding with a project like this, check out the BATF’s website to make sure what you want to do is in compliance with all applicable federal and local laws.
After much debate on the methods we could use to complete the receiver- using either a minimalist approach or more conventional machine shop methods- we decided to go the machine shop route. This was mostly because we were very impressed with the quality of the RAZOR when we received it and wanted the best possible final product. If you don’t have access to a machine shop and want to complete a project like this, no worries. Select Fire LLC offers a tool kit and drilling guide that allows you to complete an 80% RAZOR with a regular hand drill. Either method works and will provide a functional final product.
The RAZOR 80% receiver is available in both unfinished aluminum and an anodized black finish, with both short and extended rails. We selected the extended rail unfinished model since we plan on Cerakoting it. If you aren’t equipped to coat the receiver, we would suggest getting the anodized model. Anodizing is a hard finish and in many ways superior to any of the spray on finishes available to most.
A few notes on completing a project like this:
- Aluminum can be difficult to work with since it has a low lubricity. Make sure you use appropriate cutting fluid and the correct RPM for your drills.
- Measure twice and take your time. We used the digital read out (DRO) on our milling machine to locate the holes. This could also be done with the drilling fixture available from Select Fire LLC or the with layout fluid, a scribe and calipers.
- Take the time to deburr the parts. We used a deburring tool when we initially received our RAZOR to remove sharp edges. 220 grit abrasive cloth works well too. We used abrasive cloth to remove any burrs we raised from the machining we completed when we were done.
The following is presented for information purposes only and should not be constructed as instructional advise. Additionally, check the BATF’s website prior to completing your own RAZOR to make sure you are in compliance.
Select Fire LLC provided the following:
In addition to the RAZOR 80% receiver supplied by Select Fire LLC, we used to following tools and supplies from Brownells:
This was quite a rewarding project. If you are interested in learning more about the RAZOR receiver, visit Select Fire LLC.