AS Designs Transfer Lever | HK MR556 MR762 & SIG Spear 277/308 | ARC-Fire V2

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Shipping restrictions

This product cannot be shipped to the following states: CA, CO, CT, DE, FL, IL, MA, MD, MN, NJ, NV, NY, OR, RI, WA.

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Details

Running an ARC-Fire V2 in an HK MR556, MR762 or SIG MCX Spear? This is the transfer lever built for those heavy platforms: M2 tool steel with a DLC finish, engineered for optimized compatibility and long-term reliability where the standard lever merely works.

What it does

The standard ARC-Fire lever functions in MR-pattern rifles. This dedicated lever improves reliability and long-term function under the heavier operating systems of the MR556/MR762 and the Spear 277/308. It comes as a single lever and drops into your existing ARC-Fire V2 kit.

Material	M2 tool steel, DLC finish
Fits	HK MR556, HK MR762, SIG MCX Spear .277 Fury, SIG MCX Spear .308
Requires	ARC-Fire V2 kit (this replaces the standard lever)
Spear 277/308 also requires	The MCX Heavy trip kit; ask us

V2 only, these platforms only. Will not work with ARC-Fire V1 kits, and must not be used on any other platform: you risk damage to the lever, the host or yourself.

This lever brings your Spear or MR build into the AS Designs ecosystem, the widest platform support of any reset system we carry.

Complete the build

AS Designs ARC-Fire V2
AS Designs SIG MCX Slip Trip Kit Rev 2 (5.56, 300 BLK, 7.62×39)

Gunsmith installation recommended. SIG SAUER and H&K trademarks are referenced for identification only; no endorsement implied. Modification may void the firearm’s warranty.

Laws on assisted reset triggers vary by state and locality and can change. Check the laws where you live before you order. Buyer is responsible for compliance with all applicable laws.

Shipping & Returns

All sales are final; we do not offer refunds or exchanges. Items that arrive damaged or defective are covered under the manufacturer's warranty — contact us within 5 days of delivery and we will help coordinate a claim.