HK Army MP5 Performance Regulator - 450-550 PSI

Material

Aircraft-grade aluminum

Gas Type

HPA

In-stock orders typically process in 1–2 business days. Delivery time is additional.

Processing time is separate from carrier transit time. Restocking, special-order and supplier-direct items can take longer.

Checkout confirms available services, shipping charges and any available delivery estimate for your destination.

Returns depend on the item, its condition and your destination. Review eligibility, exclusions and applicable fees before ordering.

Return approval, inspection, product condition and exceptions apply. Confirm this item’s eligibility before ordering.

Report shipping damage, defects, missing parts, incorrect items or fulfillment errors within 7 days of delivery. This reporting window does not remove applicable statutory rights.

Manufacturer warranty coverage varies by product. The full policy and applicable statutory rights govern.

General policy for eligible non-custom items

Eligible non-custom items may request a return within 30 days of delivery. This does not confirm this item is returnable. Product-specific exclusions and stricter terms apply.

• Product-specific exclusions and stricter condition rules override this schedule.
• Eligible sealed, unused returns for a refund: 15% restocking fee.
• Eligible sealed, unused returns for store credit: 5% restocking fee.
• Pre-approved direct exchanges of eligible sealed, unused items: restocking fee waived.
• Opened but unused items, if accepted: 30% open-box fee.
• Installed, tested or used items, if accepted: 50% open-box fee.
• Opened or used items are considered for store credit or an approved exchange after inspection; confirmed defects, order errors and statutory exceptions are handled separately.
• These are alternative condition-based fees, not cumulative fees. Shipping charges are separate; optional coverage does not waive merchandise condition fees.

Destination and product restrictions apply. Available services and charges are confirmed at checkout.

Existing programs are managed on HRTI.

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