Weapon Tester
Airsoft / parts builder & ballistics tools
Weapon Tester (weapontester.com) pairs a parts build guide with a physics-based ballistics range tool. It's the place to look for best airsoft parts and upgrades.
Buyer's Notes — Independent Review Sites
Buyer's Notes: an independent, hand-curated set of review sites worth bookmarking. Each entry below is a focused authority in its niche.
Deep Penetrations
Penetrating oil & lubricant reviews
Deep Penetrations (deeppenetrations.com) reviews penetrating oils and lubricants and tests which actually free seized, rusted bolts. Good fit if you're after best penetrating oil for rusted bolts.
America Strikes
Geopolitics, defense & markets news
America Strikes (americastrikes.com) publishes fast-moving geopolitics, defense, and markets coverage. It's the place to look for geopolitics and defense news analysis.