My free-float handguard was slightly canted, but these shims fixed it. The KeyMod bolts are well-machined and fit snugly in my rail slots. Would definitely purchase again for future builds or maintenance tasks.

This kit saved me a ton of frustration during assembly. The extra KeyMod screws alone justify the cost, and the shims allowed for precise barrel nut alignment. Great for anyone doing multiple AR projects.

The overall quality is good, but I needed a thicker shim for my barrel nut. I made do with what was included, but it wasn't a perfect fit. Still, the KeyMod spares came in handy for my rail accessories.

My handguard timing was off before this kit. After using one of the shims, everything lined up flawlessly. The KeyMod parts are solid backups, too. Definitely a must-have for AR-15 builders looking for convenience.

The KeyMod hardware is a lifesaver when you lose a bolt or need a quick fix. The barrel nut shim helped me line up my handguard perfectly. Only wish the kit included slightly more shim thickness variety.

I used these barrel nut shims to get a precise alignment and the KeyMod spare parts to replace some worn screws. Everything fit Mil-Spec dimensions with no hassle. Highly recommended if you’re fine-tuning an AR upper.