SIG SG 553 5.56mm Assault Rifle
An updated version to the SG 552, the SG 553 by SIG Sauer AG is a carbine (or "commando") length assault rifle part of the 550 series of Swiss made SIG rifles. Besides the change in charging handle design, the upgrade from the 552 to 553 re-positioned the recoil spring from the back of the receiver to wrap around the piston rod, which helped with improving reliability issues.
A lot of aftermarket parts are also available, mostly manufactured by Brugger and Thomet such as handguards, picatinny rail adapters and stocks.
The particular variant I modelled comes with a flat top upper receiver, with flip-up ironsights.
Tris: 64,666 (includes the extra barrel and all the bullets in the magazine)
Production Period: Production Period: 21st Jan 2026 - 7th Feb 2026.
Available for purchase and download on CGTrader: https://www.cgtrader.com/3d-models/military/gun/sig-sg-553-assault-rifle-pack-game-asset
SIG SG 553 variants
Two different skins: Black and OG Green with grey finish.
SG 553 LB with Cheek Riser
Buttstock folded
Buttstock folded
Markings
Bottom view
Brugger & Thomet aftermarket Picatinny rail adapters.
SIG Cheek Riser - for optics on a slightly higher mount.
Rear sight folded.
With an ACOG
With an ACOG
Barrel Lengths
Ejection port
Side by side.
Wireframe
Translucent Magazines
Bullets, top 2 bullets are more higher in polygon. Rest are lower in polygon for optimisation.
siggas be like: "who needs a mag pouch anyway?"
Sketchfab Render
References