A featureless AR-15 is the most popular way to own an AR-platform rifle in California. By removing certain features defined in CA Penal Code 30515, you can run a standard magazine release (no fixed-mag hassle) while keeping your rifle fully legal.
What Makes an AR-15 “Featured” (Illegal Without Fixed Mag)
A semiautomatic centerfire rifle with a detachable magazine is an “assault weapon” if it has ANY of these:
- Pistol grip that protrudes conspicuously below the stock
- Thumbhole stock
- Folding or telescoping stock
- Grenade or flare launcher
- Flash suppressor (flash hider)
- Forward pistol grip (vertical foregrip)
Featureless Solutions
Grip: Thordsen FRS-15 Gen III
The gold standard. Replaces the pistol grip + stock with a one-piece featureless stock. Comfortable, looks clean, and is unquestionably legal. ~$100.
Grip: Resurgent Arms Grip Fin
Attaches to standard pistol grip, creating a fin that prevents the thumb from wrapping around. Budget option at ~$25. Keeps standard stock.
Muzzle: Thread Protector or Brake
Replace flash hider with a muzzle brake or compensator. VG6 Gamma, Precision Armament M4-72 are popular. Or pin/weld a thread protector.
Stock: Fixed Position
Use a fixed stock or pin your adjustable stock in one position. Strike Industries stock stop or a simple roll pin through the adjustment holes works.
Complete Featureless Build Parts List
- Lower: Aero Precision M4E1 stripped lower ($89)
- Upper: Aero Precision 16″ .223 Wylde complete upper ($349)
- Stock: Thordsen FRS-15 Gen III ($100) OR fixed A2 stock + grip fin ($50)
- Muzzle: VG6 Gamma 556 muzzle brake ($59)
- Trigger: Larue MBT-2S ($89) or milspec ($30)
- LPK: Aero LPK minus trigger/grip ($25)
- Magazines: 10-round Magpul PMAG ($12 each)
- Optic: Sig Romeo5 ($119) or Holosun 510C ($259)
- Total: ~$750-950 depending on options
Shop Featureless AR-15 Parts
Everything you need for a California-legal AR-15 build.