Author: Redacted Arms Dev Admin
August 20. 2026
MP5K Host Compatibility
Builders who choose an MP5K host based on price and availability rather than documented compatibility patterns discover the fitting requirements…
August 19. 2026
MP5K vs Full-Size MP5 — Mechanical Differences
The MP5K looks like a compact version of the full-size MP5 and shares most of its external design language. The…
August 18. 2026
Common AR-9 Build Mistakes
Most AR-9 build mistakes don't happen because builders are careless. They happen because the platform looks familiar enough that the…
August 17. 2026
AR-9 vs AR-15: What Actually Changes
Builders who come to the AR-9 from the AR-15 assume the transition is straightforward: same lower, same upper interface, familiar…
August 15. 2026
Legal vs Illegal Firearm Modifications — What Builders Need to Know
Most builders who run into legal problems with firearm modifications weren't trying to break the law. They assumed federal compliance…
May 22. 2026
How to Transport Firearms Safely: What Most Gun Owners Get Wrong
Most gun owners who transport firearms regularly assume they're doing it correctly. Then they cross a state line, stop near…
May 16. 2026
Common MP5 Slip Trip Problems and What Causes Them
Everything works in dry-fire. Then live fire reveals the real picture. The build fails to reset, the bolt slows under…
May 14. 2026
What Causes Light Primer Strikes in MP5 Super Safety Builds
The build looks right. Dry-fire checks out. Then live rounds fail to ignite, or only the first one fires, and…