Open Source Defense
100% gun rights, 0% culture war. Making people proud to care about gun rights.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 361 | Founded | 7 years ago | Last Issue | 7 days ago |
| Active | |||||
Read this Newsletter
opensourcedefense.substack.comLatest Issues
OSD 392: Guns and murder are surprisingly uncorrelated
Jeff Asher’s murder rate analyses continue over at his Substack:
Jeff-alytics
When Will The US Murder Rate Catch European Rates?
The US had the largest one-year drop in murder ever recorded in 2025. That followed the largest one-year dro...
OSD 391: Alibaba and the $40 gun
Rolex clones are getting incredibly good. This guy took a “super clone” to Rolex’s flagship boutique in London, and the service tech there didn’t spot that it’s a fake.
A real Rolex Submariner retails for $10,050. The super clone costs $50...
OSD 390: The dog that caught the SCAR
This was a wild week. The recap of the core facts is:
- On August 5, a federal district court judge in the northern district of Texas struck down the National Firearms Act with respect to items whose tax stamp is priced at $0. That cove...
OSD 389: What actually is the Civilian Marksmanship Program?
In about six months, you’ll be about to buy an M14 through the Civilian Marksmanship Program. You fill out a few forms online, take a course (this requirement can be satisfied by having taken any state-level concealed carry or hunter’s ed c...
OSD 388: Birds of a feather Flock separately
Isaac Botkin at T.Rex Labs has been doing a great series of videos on Flock cameras:
The centralization is the central point. Flock, to their credit, has been in the arena and has been forceful in making their case (their chief strategy of...
Key Facts
Audience Metrics
Subscribers, engagement, traffic and sponsorship for Open Source Defense.
| Subscribers | Engagement | 76 | Monthly Web Visits | ||
|---|---|---|---|---|---|
| Accepts Sponsors | Estimated Cost per Ad | ||||
Explore More
Authors
The writers behind this newsletter.
100% gun rights, 0% culture war. Making people proud to be associated with gun rights, with friendly, thoughtful, and incisive writing on guns.
Social
Frequently Asked Questions
How can I access the email archive for Open Source Defense?
You can find recent issues that have been published by Open Source Defense on Reletter by scrolling up to where it says Latest Issues. Tap on the link for any of the most recent emails or hit More Issues to see older ones.
How many subscribers does Open Source Defense have?
To see how many people subscribe to Open Source Defense, simply upgrade your Reletter account. We provide readership numbers and lots of other stats for this newsletter so you can decide if it's worth reaching out to.
How can I advertise in Open Source Defense?
Newsletter advertising can be extremely effective when it's done right. Before you pitch Open Source Defense as a potential sponsor or partner, make sure that you've done your research and checked its newsletter stats with Reletter.
Then, personalize one of our winning pitching templates and send it to the right person using the contact info provided.
How much does it cost to sponsor a publication like Open Source Defense?
Newsletter ad rates (or CPM) vary depending on many factors, including industry, number of subscribers, open rate, ad placement and more.
To find out how much an ad will cost, contact Open Source Defense using the contact information provided and ask for a copy of their media kit.
How can I find newsletters related to Open Source Defense?
Scroll up to where it says Related Newsletters to see other publications like Open Source Defense. You can also search our email newsletter directory to discover other newsletters that cover the topics you're interested in.
How do I contact Open Source Defense?
Reletter provides this newsletter's website URL above, where you will often find their contact information. We also provide links to associated social media accounts and pitching templates so you can reach out fast.