
- Low stock
AT3 Mil-Spec Magazine Catch for AR-15, T15 & T16
Real AR-15 magazine catch replacement with steel construction, mil-spec dimensions, and multiple color options.
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Collection
AT3 Tactical offers a wide range of parts and accessories for rifle-style builds, training platforms, and compatible paintball or airsoft setups. This collection includes optics, red dot mounts, backup sights, M-LOK handguards, foregrips, rail sections, sling mounts, buffer tube hardware, controls, and small parts. Use this collection when you are building out the front end, improving sighting options, adding grip control, or finishing the small details of a compatible setup. Always check mounting standards, rail space, riser height, and platform fitment before ordering.


Real AR-15 magazine catch replacement with steel construction, mil-spec dimensions, and multiple color options.
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Real AR-15 magazine catch spring replacement for compatible lower receivers and AR-style mag release assemblies.

Cantilever riser mount for compatible MRO-pattern optics with absolute or lower 1/3 co-witness setup.

Real optic kit combining the RCO circle-dot red dot with the DELTA 3x flip-to-side magnifier for compatible rail setups.

Real AT3 RCO red dot sight with circle-dot reticle, variable risers, Picatinny mounting, and included flip-up lens caps.

Compact 3 MOA red dot optic with RMSc footprint, Shake Awake, aluminum housing, and top-loading battery.
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Replacement barrel nut wrench for compatible AT3 SPEAR M-LOK and Pro Quad Rail handguards, made from laser-cut steel.

Spring-assisted front and rear BUIS set for compatible same-plane Picatinny rail setups.

Real optic kit combining the LEOS laser red dot with a 4x flip-to-side magnifier for compatible rail setups.
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Compact AT3 ARO micro red dot with 3 MOA reticle, low rail mount, and optional riser for compatible setups.
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3x red dot magnifier with QD flip-to-side mount, cowitness spacer, and IPX7-rated aluminum housing.

3x red dot magnifier with flip-to-side mount, multi-coated optics, and adjustment for compatible red dot alignment.

Compact AT3 RD-50 red dot sight with 2 MOA reticle, lightweight aluminum body, and Picatinny/Weaver compatibility.

Real steel AR-15 bolt catch with mil-spec dimensions and H-148 Burnt Bronze Cerakote.

Mil-spec AR-15 takedown and pivot pins supplied with two springs and two detents.

Made-in-USA replacement kit covering frequently lost or worn AR-15 upper and lower components.

Compact made-in-USA spare-parts kit for common AR-15 lower-receiver assembly losses and repairs.
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High 30mm cantilever scope mount for compatible Picatinny rails, with one-piece base, recoil stops, and included hardware.

Cantilever riser mount for compatible Fastfire/Venom-pattern micro red dots on Picatinny rail setups.

Low-power variable optic with illuminated BDC reticle, locking turrets, 30mm tube, and 1-4x or 1-6x magnification options.
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