Agency Arms Plus-5 Magazine Extension - Fits Glock 17 9mm Magazines, CNC-Machined 6061-T6 Aluminum, Mil-Spec Hard-Coat Anodized Finish, Includes Extended Spring, Black - BP-G17-BLK
Product Description
Upgrading a duty weapon system, competition sidearm, or tactical staging framework requires components built to flawless tolerances. Standard polymer magazine baseplates can fracture during intense drop-testing or emergency reload clearing loops on your bench, while low-tier extensions skip out on necessary high-power springs, triggering critical feeding stovepipes. The **Agency Arms® +5 Magazine Extension for Glock 17 (BP-G17-BLK)** completely flatlines these ammunition distribution headaches. It delivers an ultra-tough **billet aluminum payload extension** engineered straight from premium tactical blueprints.
Proudly CNC-machined and hard-coat anodized in the United States by Agency Arms, this high-performance basepad is sculpted from **6061-T6 aircraft-grade aluminum alloy** finished in a scratch-resistant satin black anodized coat. Designed to slide cleanly onto standard factory original Glock 17 magazine bodies, this module adds **five extra rounds of 9mm capacity** to your primary reserve stack. Crucially, the kit features a custom-calibrated, high-memory **extended chrome silicon spring wire** to ensure smooth, continuous upward cartridge pressure right up to the final shot. Featuring a rock-solid bottom retention set screw configuration, this turn-key tactical component upgrades your weapon capacity straight from your workbench.
Engineered to align cleanly inside standard open or flared competition mag-wells, this factory-built magazine extension ensures absolute mechanical feeding stability directly from your workspace bench.
*Armorer Bench Notes & Real-World Magazine Staging Guidance: The Agency Arms BP-G17-BLK base pad package arrives workspace ready, containing 1x premium billet aluminum magazine extension, 1x custom high-tensile chrome silicon extended spring coil, and an integrated hex retention set screw tracking token. PROPRIETARY GLOCK 17 MAGAZINE WELL INTERFACE MATRIX: This precise +5 extension module is engineered natively, strictly, and dimensionally to slide onto **OEM Glock 17 9mm double-stack magazine bodies**. *Cross-Caliber Conversion Checklist:* While it slides perfectly onto the polymer shell of Glock 22 (.40 S&W) casings on your bench, the volumetric internal dimensions scale out to provide a **plus-4 capacity conversion tier** due to the wider diameter ammunition profiles. Armorer Workbench Custom Staging Sequence: 1. Visually and physically confirm your host magazine and firearm are completely clear of live ammunition, and you are wearing safety eye protection. 2. Depress the standard Glock inner floorplate locking tab tool, then carefully slide the factory polymer basepad horizontally forward off the magazine rails, controlling the compressed internal spring tension. 3. Remove the factory original spring and follower assembly from the magazine tube shell. 4. Attach your factory polymer follower onto the top loop track of the new Agency Arms extended spring. 5. Compress the extended spring fully back up inside the magazine body, then slide the BP-G17-BLK aluminum pad horizontally onto the lower retention lips. 6. Tighten the rear vertical hex set screw hand-snug to lock the body tightly against your magazine tube rails before testing drop parameters downrange.*
Key Features
- Plus-5 Ammunition Expansion: Expands your native 17-round Glock 9mm payload capacity up to 22 rounds, matching the capacity of extended sticks inside a streamlined profile.
- CNC-Machined Billet Aluminum: Precision-milled from a block of high-tensile 6061-T6 structural aircraft alloy, preventing the cracking flaws found in factory polymer plates.
- Mil-Spec Hard Anodized Shell: Coated in an ultra-durable matte black hard anodized layer that protects against drop scrapes, sweat corrosion, and aggressive solvents.
- Custom Extended Spring Included: Package includes an extra-length, high-tensile chrome silicon spring wire to maintain proper vertical column alignment and ensure lock-back.
- No-Slip Ergonomic Cuts: Designed with clean, aggressive side serrations and textured relief cuts to provide a high-traction purchase during rapid tactical reloads.
- Secure Set-Screw Retention: Outfitted with an integrated vertical lock screw to keep the baseplate firmly anchored to the magazine body under high drop impacts.
Product Specifications
- Brand: Agency Arms® (Smyrna, Georgia / California)
- Model Line: High-Performance Tactical Firearm Enhancements & Billet Base Pads
- MPN/SKU Code: BP-G17-BLK (Glock 17 Plus-5 Anodized Black Specification Base SKU)
- Firearm Magazine Compatibility: Factory Glock OEM 17 / 34 Double-Stack 9mm Magazine Tubes Natively
- Ammunition Capacity Conversion: Adds +5 Rounds for 9x19mm Luger | Adds +4 Rounds for .40 S&W Calibers
- Structural Material Base: CNC-Machined Billet 6061-T6 Aircraft Grade Structural Aluminum Alloy
- Exterior Finish Dressing: Non-Reflective Matte Black Hard-Coat Anodized Surface Finish Coating
- Spring Component Included: Custom High-Tensile Progressive Chrome Silicon Extended Spring Wire
- Retention Retention Mechanism: Rear Steel Hex Grub Set Screw with Micro-Locking Alignment Lugs
- Full Kit Component Checklist: 1x Aluminum +5 Extension Pad, 1x Premium Extended Spring, 1x Set Screw Only
- Packaging Format Class: Factory Original Sealed Agency Arms Presentation Box with Clear Window Panels
- Product Type Category: Pistol Accessories / Magazine Extensions & Handgun Baseplates
- Overall Unit Mechanical Width: ~1.15 Inches (~29.2 mm Standard Glock Frame Clearances)
- Overall Physical Unit Length: ~1.65 Inches (~41.9 mm Linear Extension Depth Profile)
- Net Component Module Mass: ~2.10 Ounces (~59.5 Grams Lightweight Structural Tactical Alloy Weight)
- Global Quality Certifications: Engineered to Meet Professional Duty and Tactical Competition Specs
- Warranty Tracking Protection: Fully Backed by Agency Arms Factory Materials Guarantee
