ZRO 4.25" LITE MLOK

• New Gen 5
• 4.25" Exact length 
• 1.35" ID
• 7 Sided Design allows 45deg mounting options
• No timing of barrel nut required, no shims needed
• Works with any receiver forged or billet
• Mil-Spec Hardcoat Anodize
• 7075 Barrel nut  included w/ Hardcoat Anodize
• Free Floating Design
• Proven Slip fit locking mount design, much more secure than a clamp type mount.
• Barrel nut uses standard wrenches or SLR Billet wrench for perfect fit
• Continuous top rail design allows optic mounts to cross receiver/handguard threshold
• Mil-Spec 1913 Mounting rails

ZRO Hardguard System

Steel Dowel Pin Precision Interface between HG and Receiver.

Works with SLR Receivers with ZRO locking hole. ( Available Feb 1 2023)

We now will offer a FREE service to drill any AR15 Upper receiver to receive the ZRO dowel pin.

Send us your stripped receiver AND a return label. We will drill upper and return to you.