FN SCAR Accessories & Upgrades for SCAR 16S and 17S

Whether you run a SCAR 16S for speed or a SCAR 17S for authority, the right upgrades make the rifle feel more natural and easier to run. This page brings together proven parts from respected makers so you can improve controls, mount optics correctly, and tailor the rifle to your preferences without guessing.

Fitment matters—especially when you’re choosing parts for NRCH vs reciprocating setups, or dialing in an optic mount for your tube size and eye relief. Use the product filters to narrow down by brand and type, then check each listing for compatibility notes before ordering.

Shop by upgrade type

Charging handles

A charging handle upgrade is one of the quickest ways to improve comfort and access around optics. Choose the style that matches your rifle’s charging handle system and your preferred grip.

Triggers

A trigger change can tighten up consistency and improve feel. If you’re chasing a cleaner break for accuracy work or a faster reset for drills, pick a trigger designed specifically for the SCAR platform.

Optic mounts and rails

The SCAR’s top rail makes mounting straightforward, but the “right” mount depends on tube size, height preference, and whether you want quick detach. If you swap optics often, QD mounts can be a smart move.

Handguards and accessory rails

If you’re adding lights, lasers, or grips, a quality rail system helps with placement and ergonomics. Confirm model support and any generation notes listed on the product page.

Stocks and adapters

Stock adapters and buffer tube solutions are usually chosen for comfort and length of pull. Pick what matches your use case, then verify compatibility with your specific model and configuration.

Safety selectors and sling mounts

Controls and sling hardware are the upgrades you feel every time you handle the rifle. Ambidextrous safeties, QD points, and sling mounts can make transitions and carry more natural.

Compatible models and fitment tips

Most accessories in this collection are intended for the SCAR 16S and SCAR 17S. Before buying, confirm:

• Your exact model (16S vs 17S, and any variant notes)

• NRCH vs reciprocating charging handle requirements for handle-related parts

• Optic mount tube size and height preferences

• Any existing rail or stock changes that could affect compatibility

If you’re unsure, use the fitment notes on the product listing and reach out before ordering. It’s the fastest way to avoid returns.

How to pick the right upgrades

If you want a simple decision path:

1. Start with the controls you touch the most (charging handle, safety)

2. Set up your optic mount for a comfortable head position and repeatable eye relief

3. Consider a trigger once the rifle’s handling and setup feel dialed in

4. Add rail and sling hardware based on how you carry and shoot

Why buy SCAR upgrades from Mounts Plus

We focus on parts from brands that are widely used and well-supported, with clear fitment notes and fast U.S. shipping. If you’re building a reliable setup for training, work, or the range, you’ll find upgrades here that are chosen for function first.

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FAQ

What models does this page support?

Most products here are for SCAR 16S and SCAR 17S. Some items may fit additional variants, so always check the product fitment notes.

How do I know if I need an NRCH-specific charging handle part?

Check whether your rifle uses a non-reciprocating charging handle system. If it does, select parts labeled for NRCH compatibility.

What are the most common “first upgrades”?

Many owners start with charging handles and controls, then optimize their optic mount and sling setup. Triggers and rail changes are often next.

Do I need a quick detach optic mount?

If you frequently remove and reinstall optics, QD can be worth it. If your optic stays put, a standard clamp mount is usually simpler.

Are these upgrades hard to install?

Many are straightforward, but difficulty varies by part. If a product requires more than basic tools or has special steps, the listing will typically mention it.

How do I avoid buying the wrong part?

Confirm your exact model, verify NRCH vs reciprocating requirements when relevant, and read the fitment notes on the product page before checkout.

Can rails or stock adapters affect compatibility with other parts?

Yes. Changes to rails, stocks, or adapters can impact clearance and fitment for accessories. If you’ve already modified those areas, double-check compatibility details.