How to Navigate and Order from OperationParts.com

Updated

OperationParts.com is an online firearms parts and accessories store organized around firearm platforms and part categories, with a search bar, account, and cart available from the top menu. You can browse by platform (AR15/SR15, AR10/SR25, bolt gun, shotgun, pistol, and more) or by category (upper receiver, lower receiver, sights, optics, magazines, gear, and services), then add in-stock items to your cart. Some products are marked out of stock or offered in multiple variants, so you'll need to select options or check availability before ordering.

How the site is organized

The main menu splits into a few logical groups. Understanding this structure is the fastest way to find a part.

By firearm platform:

  • Rifle (AR15/SR15, AR10/SR25, Bolt Gun, CZ Scorpion, H&K, M-14, M249, SCAR 16/17)
  • Shotgun
  • Pistol
  • NFA

By component category (within a platform):

  • Upper Receiver — complete uppers, upper receiver parts, gas blocks, muzzle devices, barrels, handguards/rail systems, suppressors
  • Lower Receiver — lower receiver parts, lower receivers, stocks, grips, accessories
  • Sights — iron sights (BUIS), front and rear iron sights, night sights
  • Optics — optic accessories, optic mounts
  • Mags, Accessories, Armorer Tools, Cleaning & Lubrication, Training Aids
  • Gear — bipods and mounts, slings and mounts, lights/lasers and mounts

There is also a Brands entry in the menu, which is useful if you already know you want a specific manufacturer such as Knight's Armament.

Finding a specific product

  1. Use the search bar at the top of the page if you know the product name or model.
  2. Browse by platform first, then category if you know the gun but not the exact part. For example, AR15/SR15 → Upper Receiver → Handguards / Rail Systems & Accessories.
  3. Check the product tile for price, stock status, and whether it has variants. Tiles show one of several actions:
    • Add to cart — in stock, single configuration
    • Select options — multiple variants (color, size, etc.) you must choose before adding
    • Read more — often paired with an out-of-stock notice

Using Featured and Most Popular products

The homepage surfaces two curated lists that are useful when you're not searching for something specific:

  • Featured Products — currently highlights items such as the Allen Engineering Recce Barrel Kit (16.5″, $600.00), the KAC SR-15 IWS Lower Build Kit BLEM ($648.00, currently out of stock), the KAC 5.56 SR15 KS4 Rifle System (16″, $2,999.52), the Allen Engineering AEM5 MK12 Suppressor (knurled, $850.00), and the KAC SR-25A3 Upper Receiver Kit with 22″ barrel ($3,456.00–$5,024.25 depending on variant).
  • Most Popular Products — includes lower-cost, frequently bought items such as the KAC 5 Rib Handguard Panel ($27.99), the Blue Force Gear Vickers 2-TO-1 Padded Sling ($116.95), the KAC Leupold Delta Point Pro Modular Scope Cap Attachment ($218.81), and the Magpul MOE SL-K Carbine Stock – Mil-Spec ($42.70).

These lists are a quick way to see what the store is pushing and what other buyers gravitate toward, but they are not a full catalog — use the menu or search for anything not shown.

Account, cart, and checkout flow

The top menu includes Search, Account, and Cart. The typical flow is:

  1. Find a product and select any required options.
  2. Add it to the cart.
  3. Review the cart, then proceed through checkout (the site shows an Account entry, so you can register or sign in).

Note that the available page information does not specify payment methods, shipping costs, or whether an account is required to check out. Confirm those details during checkout rather than assuming.

Staying updated

The site invites visitors to subscribe to its newsletter, which is the stated channel for new-product and promotion updates. If you're waiting on a restock (for example, the out-of-stock KAC SR-15 IWS Lower Build Kit BLEM), subscribing is a reasonable way to hear about availability.

Common snags to expect

  • Variant products require you to pick an option before the cart button works — if "Add to cart" seems missing, look for "Select options."
  • Out-of-stock items show a "Read more" style tile with an explicit out-of-stock message; you cannot add them.
  • Price ranges (like the SR-25A3 Upper Receiver Kit) mean the final price depends on the variant you choose.
  • NFA items (suppressors) sit under their own menu section and may involve additional legal steps — the site does not detail these on the pages shown, so verify requirements separately.