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AR-15 Parts & Forced Reset Triggers

Build it, fix it, or make it faster. NSPEC Innovations stocks the AR-15 parts serious shooters actually want, from our signature forced reset triggers and the Super Safety to barrels, complete uppers, bolt carrier groups, handguards and full build kits. Specialty and hard-to-find components, in stock and ready to ship.

Shop By Build Stage

Every Part, In Build Order

An AR-15 comes together in a predictable sequence. We have organized the catalog the same way an armorer works the bench, so you can jump straight to the stage you are on. Start with the trigger group (where NSPEC built its name), move up to the upper, finish the lower, then sort feed and caliber.

01

Trigger Group & Fire Control

Our flagship. NSPEC is built around forced reset triggers and the Super Safety, drop-in fire control that resets faster than your finger can on its own while staying a one-pull, one-round semi-auto trigger. Pair it with anti-walk pins and a quality lower parts kit for a clean, tight build.

AR-15 Triggers Forced Reset Triggers AR-15 Safety Lower Parts Kits
02

Upper Receiver Group

The business end. Drop in a complete upper for a fast, headache-free build, or assemble your own from a barrel, bolt carrier group, charging handle, handguard, gas system and muzzle device. Mix and match to dial in barrel length, weight and gas timing.

Complete Uppers Barrels Bolt Carrier Groups Charging Handles Handguards Gas System Parts Muzzle Brakes
03

Lower, Buffer & Stock

Where ergonomics live. Complete the lower with a parts kit, set up your recoil system with a buffer kit, then choose the stock and grip that fit how you shoot. Folding adapters and adjustable stocks let you tune length of pull and footprint.

Lower Parts Kits Buffer Kits & Parts Buttstocks & Slings Pistol & Forward Grips
04

Feed & Caliber-Specific Parts

Keep it running. Stock up on reliable magazines, then shop parts built for a specific chambering, whether you are running a suppressed 300 Blackout pistol, a 7.62x39 AR, or a low-cost .22LR plinker.

AR-15 Magazines 300 Blackout Parts 7.62x39 Parts .22LR Parts
05

Build Kits & Accessories

Skip the guesswork. Build kits bundle matched components so you order once instead of cross-checking a parts list, and our accessories drawer covers the pins, springs and small parts that finish a job.

Build Kits Other AR-15 Accessories
AR-15 Anatomy

Upper Group vs. Lower Group

Every AR-15 splits into two halves that pin together. Knowing which group a part belongs to makes ordering and troubleshooting far simpler, especially on a first build.

Upper

Upper Receiver Group

  • Upper receiver Houses the bolt and anchors the barrel and handguard.
  • Barrel Sets caliber, length and accuracy; threads accept the muzzle device.
  • Bolt carrier group The engine that cycles rounds and locks into battery.
  • Charging handle Manually cycles the action and clears the chamber.
  • Handguard Free-floats the barrel and mounts optics, lights and grips.
  • Gas system Tube, block and length that time the rifle's cycling.
  • Muzzle device Brake, compensator or flash hider on the muzzle threads.
Lower

Lower Receiver Group

  • Trigger group Fire control, including Forced Reset Triggers and the Super Safety.
  • Safety selector Sets the rifle to safe or fire.
  • Lower parts kit Springs, pins, detents and the small parts that complete a lower.
  • Buffer system Tube, buffer and spring that absorb and return bolt energy.
  • Stock Fixed or adjustable; sets length of pull and cheek weld.
  • Pistol grip Primary point of control and trigger-hand ergonomics.
  • Magazine Feeds the chamber; capacity and caliber matter for fit.
Before You Order

Choosing the Right AR-15 Parts

Build or Upgrade

Buying a complete upper is the fastest route: it pins to your lower and you are shooting. Building from parts costs less per piece and lets you control every spec, from barrel profile to gas length. Both paths are fully stocked here.

Gas System Length

Gas length tunes how the rifle cycles. Carbine is the proven short-barrel standard, mid-length softens recoil on 16-inch 5.56 builds, and rifle-length runs smoothest on longer barrels. Match the gas system to your barrel length for reliable cycling.

Caliber & Fitment

Most parts are caliber-agnostic, but barrels, bolts and magazines are not. 5.56 / .223 shares most components, while 300 Blackout, 7.62x39 and .22LR need matched bolts, barrels or magazines. Check the spec listed on each product page.

Mil-Spec Compatibility

Parts cut to mil-spec dimensions drop into any standard AR-15 receiver, which is what keeps the platform so easy to build and repair. Specialty triggers and a few caliber-specific parts carry their own fitment notes, so read the listing before you buy.

Trigger Legality

Forced reset triggers and the Super Safety are semi-automatic fire control, but rules vary by state and change over time. Confirm that any trigger is legal at your address before ordering. See shipping restrictions below.

Frequently Asked Questions

  • What AR-15 parts does NSPEC carry?

    A full range: forced reset triggers and the Super Safety, drop-in and standard triggers, complete upper receivers, barrels, bolt carrier groups, charging handles, handguards, gas system parts, muzzle brakes, buffer kits, stocks, lower parts kits, magazines and build kits. We also stock caliber-specific parts for .22LR, 300 Blackout and 7.62x39 builds.

  • Are NSPEC AR-15 parts mil-spec compatible?

    Most parts we carry are built to mil-spec dimensions and drop into any standard AR-15 lower or upper. Some specialty triggers and caliber-specific components have their own fitment notes, listed on each product page. If you are unsure, check the specs or contact us before ordering.

  • What is a forced reset trigger?

    A forced reset trigger uses the bolt carrier to mechanically push the trigger forward after each shot, resetting it faster than a shooter could on their own. It still fires one round per trigger pull like any semi-auto trigger, but the quick reset gives a faster, more responsive feel. We carry Forced Reset Triggers and the Super Safety from house and partner brands.

  • Is a forced reset trigger or Super Safety legal in my state?

    Legality varies by state and changes over time. It is the buyer's responsibility to confirm that any trigger, upper, barrel, magazine or accessory is legal at their address before ordering. Certain products cannot ship to specific states regardless of FFL status. Review the shipping restrictions below and check current local, state and federal law.

  • Do I need an FFL to buy AR-15 parts?

    Most AR-15 parts, including triggers, handguards, stocks and small components, ship directly to you with no FFL required. Upper receivers, barrels and high-capacity magazines require a valid FFL dealer address to ship to CA, WA, CT, NJ and the cities of New York and Chicago. Any receiver that is a firearm under the law must ship to an FFL.

  • Should I buy a complete upper or build my own?

    A complete upper is the fastest path: it arrives assembled and ready to pair with your lower. Building from individual parts gives you full control over barrel length, caliber, gas system and handguard, and often costs less. NSPEC stocks both complete uppers and every component you need to assemble a build from scratch.

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