Best FN SCAR 17 Accessories 2026 (+ SCAR 16)

Magazines are the highest-ROI SCAR purchase and the first thing to buy after the rifle. This is where the SCAR 17 and SCAR 16 split hard, and getting it wrong means a rifle that will not feed. The SCAR 17 uses a proprietary .308/7.62 NATO magazine that shares nothing with SR25, AR-10, M14/M1A, or FAL magazines; you buy FN factory steel 20-rounders (the current 98892 generation, which also cross-fits the SCAR 20S and 6.5 Creedmoor) or the cheaper ProMag polymer alternative. Do not try to run an AR-10 magazine in a SCAR 17. The SCAR 16, by contrast, is built around standard AR-15 STANAG magazines, so Magpul PMAG Gen M3s and any quality 5.56 mag drop right in.

Plan mag count around your role. A home-defense or truck-gun SCAR wants four to six loaded mags. Range and training days burn through magazines fast on a rifle with a light trigger, so six to ten is reasonable once you start running drills. Rotating mags keeps a backup loaded if you hit a feed issue mid-string. For the SCAR 17 specifically, factory FN mags cost more (~$55) than the ProMag option (~$20), but the factory steel mags are the safe default for any role where reliability matters more than price. For what to feed the .308 SCAR 17 once you have the mags, see our best .308 ammo guide.

Compatibility recap, because it is the most common SCAR mistake: the SCAR 17 is proprietary .308, the SCAR 16 is STANAG 5.56. A PMAG 30 feeds the 16 and will not fit the 17 at all; an FN 17 mag feeds the 17 and is irrelevant to the 16. Buy to the rifle you own. The two picks below are the FN factory 17 mag and the Magpul PMAG 30 for the 16.

The SCAR 17 needs a non-cantilever optic mount and a taller cheek riser to shoot a magnified optic well. The 17S has a sharp recoil impulse that flexes cantilever mounts and walks zero over a string, which is why SCAR shooters steer toward mounts built for the platform rather than generic cantilever LPVO mounts. The fix is a high-clamping, return-to-zero mount built for the platform. The Bobro SCAR Dual Lever Mount (~$256) uses a non-cantilever design with integrated rings in 30mm, 34mm, or 35mm for LPVOs and scopes, and its dual-lever QD returns to zero reliably after removal. The Geissele Super Precision SR-25/SCAR mount is the other proven choice. Avoid generic cantilever LPVO mounts on the 17S.

The second half of the problem is the factory stock. Its low comb leaves you chinning the stock behind a tall-mounted optic, and the factory hinge develops play. The KDG FN SCAR Stock (~$385) solves both in one part: a three-position cheek riser (0, +0.25 in, +0.50 in) gives a real weld behind a magnified optic, and the all-metal 17-4 stainless hinge replaces the loose factory feel with a tight, durable lockup. It fits the SCAR 16, 17, and 20. For broader muzzle-device selection and how device choice interacts with point of impact on a thin-shoulder barrel like the SCAR's, our muzzle device guide is the companion read, and you can line the SCAR up against other platforms with the rifle comparison tool.

Most muzzle devices will not seat correctly on a SCAR because the barrel shoulder is thin. The device bottoms out against the barrel crown before its threads pull up against the shoulder, which times the device wrong or leaves it sitting crooked. The fix is a device that indexes off the crown itself rather than the shoulder, like the Dead Air SCAR flash hider. It is offered in the correct thread pitch for both rifles: the DA305 in 5/8x24 for the SCAR 17 and the DA306 in 1/2x28 for the SCAR 16, matching the factory threads on each platform. As a bonus, it doubles as a Dead Air KeyMo suppressor mount, so if you run a KeyMo-equipped Dead Air can, the flash hider is also your quick-detach interface.

A note on suppressors for the SCAR 17: the .308 SCAR is one of the better hosts for a can because its short-stroke piston keeps gas out of the receiver. Federal NFA paperwork still applies (Form 4, background check, registration), but the federal making and transfer tax on suppressors is now $0, and current eForm approvals are running days to a few weeks rather than the long waits of the past. For broader muzzle-device and suppressor-mount selection across platforms, read the muzzle device guide.

Parker Mountain Machine is the dominant SCAR-specific parts maker, and its lower-receiver kit fixes the small ergonomic complaints the bigger upgrades leave behind. The PMM magwell (~$150) is the biggest reload-speed gain after factory magazines: a two-piece clamshell that funnels mags into the well and installs with one bolt and a roll pin, no permanent modification, and fits the SCAR 16, 17, 20, and 15P. The PMM BCD battery control device (~$60) is an enlarged bolt-release paddle machined from 6061 aluminum with a Type 3 hardcoat, letting you drop the bolt without breaking your firing grip. The PMM safety selector levers (~$25) are the cheapest meaningful SCAR ergonomic upgrade, swapping the factory lever for a larger shelf that is easier to find under stress. All three are drop-in and all fit both the SCAR 17 and SCAR 16.

If you are building out a full SCAR setup, the magwell and safety levers are the two to start with: the magwell pays back every reload, and the safety levers are nearly free relative to the rifle. Browse the rest of the SCAR accessory ecosystem in our component catalog.

The SCAR ships with multiple QD sling sockets, so the natural fit is a dual-QD sling rather than a platform-specific one. The Magpul MS4 Dual QD (~$60) mates its push-button QD swivels directly to the factory sockets and converts between one- and two-point carry in seconds, which suits the SCAR's use as a do-everything battle rifle: two-point for patrol weight management, one-point for transitions and CQB. It fits both the SCAR 17 and SCAR 16. For the full breakdown of sling types, attachment methods, and how QD hardware compares to fixed loops, see our best slings guide.

FN discontinued the legacy commercial SCAR in October 2025, but it is not abandoning the platform; it is doubling down on it. At SHOT Show 2026, FN relaunched the line as the SCAR Next Generation with a hydraulic buffered bolt carrier to soften the recoil impulse, an improved single-stage trigger on the carbines and a new two-stage trigger on the 20S, full ambidextrous controls, and purpose-built QD suppressors, with the 17S shipping first in 2026. The aftermarket from Parker Mountain Machine, KDG, Geissele, and Bobro keeps growing. Most of this guide applies directly to the legacy 17S and 16S that owners already run. Next Generation buyers should verify fitment first, since FN's updates (an integrated M-LOK handguard, improved triggers, and U.S.-standard muzzle shoulders) can reduce the need for the legacy rail, trigger, and thin-shoulder muzzle-device fixes. For the full breakdown of what FN changed, read our FN SCAR Next Generation coverage from SHOT Show 2026.