How to Build a Featureless AR-15 (California & NY 2026)

A featureless AR-15 is a detachable-magazine semi-auto rifle that has had every feature on its state's assault-weapon list removed, so it falls outside the legal definition of an assault weapon. The reward for going featureless is the part that matters: you keep a standard detachable magazine and a standard magazine release instead of locking the action into a fixed-magazine "bullet button" or maglock setup. The cost is that you give up the pistol grip, the adjustable stock, and (depending on the state) the muzzle device.

The single-feature test that drives this is most often associated with California, where Penal Code 30515 lists the features for a detachable-magazine centerfire rifle: a pistol grip that protrudes conspicuously beneath the action, a thumbhole stock, a folding or telescoping stock, a flash suppressor, a forward pistol grip, and a grenade or flare launcher. Remove all of them and the rifle is no longer an assault weapon under that statute. New York, New Jersey, and Connecticut run their own versions of the test, and the lists are not identical. That difference is the whole reason this guide exists.

Going featureless is one of several ban-state compliance paths. If you would rather buy a finished compliant rifle than configure one, the best California-legal tactical firearms guide covers factory featureless and fixed-magazine options, and you can mock up a parts list on the custom AR platform in our rifle builder before you spend a dollar.

Start with the grip and the stock, because those two features appear on every featureless list and a stock-and-grip kit clears both in one purchase. The pistol grip is the feature most builders trip on first: a fin-style featureless grip forces a straight-wrist grasp that removes the "protruding conspicuously" geometry. The telescoping stock is the next, and a fixed stock or an all-in-one shell like the Thordsen FRS-15 settles it.

Only after grip and stock are sorted does the muzzle matter, and the muzzle is where the build forks by state. In California, swap any flash hider for a muzzle brake or compensator and you are done. In New York, the muzzle work is subtractive: pull the threaded muzzle device, and run a bare, non-threaded barrel with no brake, comp, or flash hider at all. The magazine is the last piece, and it is a separate law entirely, covered below.

A featureless grip removes the protruding pistol grip feature by forcing a straight-wrist hold, and it is the cheapest entry into a compliant build. The grip drops onto a standard AR lower with no permanent receiver modification and keeps the standard magazine release working, which is the practical payoff of the whole featureless approach. The choice between picks is mostly material: reinforced polymer for the lowest price, billet aluminum for a grip that does not flex under a firm firing hold.

The Strike Industries Simple Featureless Grip is the value default at under $20 and is the fastest path out of the grip feature for either California or New York. The Juggernaut Tactical Featureless Grip is the premium aluminum answer for shooters who want a rigid grasp and are willing to pay roughly three times the price for it. Both keep the standard magazine release functional.

A featureless stock clears the telescoping-stock feature, and the most efficient option clears the pistol grip at the same time. The Thordsen Customs FRS-15 Gen III stock kit replaces both the protruding pistol grip and the collapsible stock with a single fixed-length shell, mounting to a standard mil-spec buffer tube without gunsmithing. One purchase, two features off the list. Its 33% glass-filled nylon construction stays rigid, and it is made in California, which is a fitting detail for the rifle most likely to wear it.

The trade-off is a fixed length of pull with no adjustment once installed, and added bulk over a bare featureless grip. For a New York build, the FRS-15 is the whole project: it addresses grip and stock, and because New York bans muzzle devices outright, there is no brake to add afterward. For more on standard AR stock options when compliance is not the constraint, the best AR-15 stocks guide covers the adjustable and fixed field in detail.

In California, the only banned muzzle feature is the flash suppressor, so a muzzle brake or compensator on a threaded barrel is legal on a featureless rifle. Swap a flash hider for a brake and the muzzle feature is solved. The picks here are all pure brakes or compensators with no flash-hiding geometry, which is the line that keeps them compliant. Read this section as California-specific: in New York, every device below is a banned feature, and a compliant New York rifle runs a bare, non-threaded muzzle instead.

The Strike Industries King Comp is the budget answer, a dual-chamber compensator that drops onto any 1/2x28 5.56 barrel for under $50. The VG6 Precision Gamma 556 is the lightweight stainless pick, and the distinction matters: run the Gamma, which has no flash-suppression geometry, not the flash-hiding VG6 Epsilon, which carries prongs that read as a flash suppressor and put a California build at risk. The SLR Rifleworks Synergy Comp California model is the premium choice precisely because SLR sells it as the California-legal variant, which takes the interpretation risk off the table.

For the broader logic of muzzle brakes, compensators, and flash hiders outside the compliance context, our muzzle device guide breaks down what each design actually does at the muzzle.

Going featureless does not raise your magazine ceiling. California, New York, New Jersey, and Connecticut all cap detachable magazines at 10 rounds, and that cap is a separate law from the feature test; a perfectly featureless rifle fed by an 11-round magazine is still illegal in those states. The Magpul PMAG 10 Gen M3 is the default, with the same anti-tilt follower and reliability as the 30-round PMAG in a 10-round body that handles cleanly from the bench and prone. Buy them in quantity; they are inexpensive, and a featureless rifle is only as useful as the magazines feeding it.