UTG Model 4/AR15 Receiver Wedge - Precision Fit, Red

The UTG Model 4/AR15 receiver wedge is a simple, effective tool for tightening up the fit between your upper and lower receiver. If you've noticed any play or movement where they join—or you're building a new rifle and want it tight from day one—this red wedge fits near your takedown pin and does the work of keeping everything snug. It's the kind of no-fuss upgrade that works on any AR platform and delivers real results without breaking the bank or requiring gunsmithing.

Loose receivers cause vibration and can shift zero over time. A snug fit means better repeatability, whether you're zeroing for hunting, working precision drills at the range, or just enjoying tighter rifle feel. This wedge eliminates that slop and helps your AR shoot the way it was designed to.

Installation is straightforward: position it near the takedown pin location and you're done. No tools, no fitting, no permanent modifications. If you upgrade your build or swap receivers, just move it along. It's red—visible and easy to spot if it ever comes loose (though it won't). A lot of serious shooters run one of these as routine maintenance on rifles they count on.

Key Features

• Eliminates upper-to-lower receiver play and tightening
• Reduces vibration for improved accuracy and repeatability
• Prevents wear on receiver lugs from movement and cycling
• Fits near takedown pin location on AR15 and Model 4 platforms
• Easy installation with no permanent modifications
• Bright red finish for quick identification

Frequently Asked Questions

Will this wedge fit my AR15?

Yes. The UTG receiver wedge is designed for AR15 and Model 4 platforms and installs near the takedown pin location on any standard configuration.

Do I need special tools to install it?

No. The wedge simply fits in place near the takedown pin—no gunsmithing, no tools, no permanent modifications required.

Can I move it to another rifle?

Yes. Because it doesn't permanently alter your receivers, you can transfer the wedge to another build or swap if you upgrade.

What does it actually do?

It takes up slack between your upper and lower receiver, keeping them tight against each other. A snug fit reduces vibration, improves accuracy consistency, and prevents wear on the receiver lugs from cycling and movement.