One-piece, adjustable SIG mag release — 316 marine-grade stainless, textured deep-groove CNC face, extended up & out button for secure grip and easy reach. Includes integrated spring, set screw, and L-hex tool. 

Built from marine-grade 316 stainless, the Cross Armory One-Piece Adjustable Mag Release replaces the OEM plastic clip with a rigid, tunable all-metal design. The button is extended up and out for an easy, secure index; the face is textured with deep CNC groove slots for maximum confidence on every press. Integrated spring, adjustable set screw, and included L-hex tool make installation and tuning simple — drop-in fit for P320/P250 platforms and compatible grip modules.

Engineered from the ground up, the Cross Armory One-Piece Adjustable Mag Release is the most robust, field-tested P320 mag release we’ve ever produced. CNC machined from marine-grade 316 stainless, the single-piece body replaces the fragile OEM plastic retention clip with a durable all-metal solution and a precision set screw for adjustable release sensitivity.

To create this mag release we literally bought every available magazine release on the face of the earth — from major manufacturers to one-man custom shops. We cataloged features that worked, rejected features that didn’t, and ripped out the OEM plastic clip that frustrated us all. We upgraded the material to marine-grade 316 stainless, tested different coatings and finishes to nail colors and grip textures, and completely redesigned the geometry for a secure, ergonomic button that sits extended and up for easier reach.

Starting from scratch, we prototyped, tested, and iterated — over a year of R&D, multiple prototype rounds, extensive live-fire drills, and pro-shooter testing. We validated fatigue and corrosion resistance, tuned the integrated spring dynamics, and finalized a set-screw adjustment system that lets you dial the release from secure lockups to competition-grade short-presses. The result: the most robust, precisely engineered SIG mag release on the market. We guarantee it.

The button is purposefully extended out and up for a secure, natural grip and easier reach — especially under stress or with gloves. The textured face features deep CNC groove slots for tactile feedback and a rugged look that stands up to hard use.

Installation is simple and field serviceable with the included integrated spring, set screw, and L-hex tool. Tune the set screw from conservative lockups for duty carry to short-press settings ideal for competition — all without additional hardware.

PARTS INCLUDED:

PACKAGE CONTENTS:

– 1x P320 Extended Adjustable Mag Release

– 1x Set Screw

– 1x L Hex Tool

– 1x Mag Release spring

Compatibility

SIG & P320-style frames / grip modules – MOST MAJOR MFG INCLUDED

Official SIG / OEM modules & variants

• SIG Sauer® P320 — Full, Compact, Carry (standard polymer grip modules).

• SIG P320 X-Series (XCarry, XCompact, XFull, XFive / X-Series family).

• SIG P250 grip modules — noted compatibility for many aftermarket P320-style parts that support P250 frames (where explicitly stated).

Third-party / aftermarket grip module manufacturers (known P320-style grip modules)

• Icarus Precision (A.C.E. / XTEN / SOCOM / X-Full / X-Compact families) — high-quality billet / metal grip modules compatible with P320 FCU

• Wilson Combat — WCP320 grip modules (Full / Carry / Compact) — precision polymer/metal modules designed as direct P320 replacements

• Grayguns — P320 grip modules / laser-sculpted modules (XCarry, XSeries fits) — Grayguns produces a range of modules for P320/XSeries; check their product pages for XSeries magazine compatibility caveats.

• Mirzon — Mirzon XCarry / X-Series modules (partnered and marketed for X-Series fit/finish) — marketed as compatible with X-Series modules and P320 family.

• Brouwer (M1811 grip modules) — promoted in the P320 community as a beefy aftermarket option (often referenced as M1811 style).

• OA Defense (Oracle Arms) — 2311 grip modules / conversion frames — known in the market as P320 compatible grip modules (verify model specifics).

• Timber Creek (TC) grip modules — marketed as P320 grip module replacements / upgrades and listed among compatible modules

• Magpul / Grayguns / other boutique shops — several smaller shops produce P320-style modules and replacement polymer/metal grip modules (Grayguns is a major example).
  

Hybrid / drop-in frames & billet modules (examples)

• Icarus ACE / X-Full / XTEN series (billet aluminum modules) — often used in competition/builds; check caliber compatibility

• Wilson Combat WCP320 (polymer and metal options) — direct drop-in replacement modules for many P320 variants.

Not compatible / special cautions

SIG P365 family: NOT compatible — different frame geometry (P365 is a separate platform). Do not expect P320 mag catches to fit P365 style frames.

*JSD mfg NOT COMPATABLE AND NOT RECCOMENDED.

FAQ 

Q: Why is the button extended and up?
A: The extended, upward geometry gives your thumb/index finger a more natural purchase point—reducing reach and improving control, especially when wearing gloves or under stress.

Q: What is the purpose of the deep CNC groove slots?
A: The grooves provide tactile feedback and positive traction for every press while giving the release a premium, rugged aesthetic.

Compatibility: SIG Sauer® P320/P250® (9/40/357), P320 X-Series® (including Legion®), Icarus Precision, Brouwer M1811, Wilson Combat® WCP320, OA Defense (Oracle Arms) 2311, Mirzon, Timber Creek TC grip modules, and ALL P320 variants & compatible grip modules.

SKU / UPC / COLOR

PRODUCT / PCKAGE SPECS

DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by SIG Sauer® (including SIG Sauer, Inc., SIG Sauer GmbH, or any of their affiliates).
“SIG Sauer” and related trademarks are the property of SIG Sauer, Inc. and/or its affiliated entities. Cross Armory, LLC (and its affiliates) has no affiliation, sponsorship, or endorsement relationship with SIG Sauer. Any reference to SIG Sauer on this page or in our marketing materials is made only to describe compatibility with SIG Sauer firearms.