DO YOU BUY USED AIRSOFT REPLICAS?

Yes, we buy back certain used airsoft replicas and equipment! However, the evaluation must be done in-store. Our team will test the replica on-site to verify its functionality and overall condition before making you an offer. If it’s accepted, the value will be converted into store credit, usable on all your future purchases. Simple, quick, and convenient!

DO YOU OFFER REPAIRS AND MAINTENANCE ON REPLICAS?

We offer a fast and efficient repair and maintenance service — so reliable that other stores trust us to repair their replicas. Our expert Martin, with over 13 years of experience in the field, is known for his high-quality work and quick turnaround. A technician will clearly explain all available options, estimated turnaround times, and associated costs before any work begins.

WHAT IS YOUR WARRANTY AND RETURN POLICY?

We offer a fast and efficient repair and maintenance service — so reliable that other stores trust us to repair their replicas. Our expert Martin, with over 13 years of experience in the field, is known for his high-quality work and quick turnaround. A technician will clearly explain all available options, estimated turnaround times, and associated costs before any work begins.

DO YOU OFFER CUSTOM UPGRADES AND MODIFICATIONS?

Yes! At District Airsoft, we offer a complete upgrade and customization service for your replicas — both internally and aesthetically. Whether you’re looking to improve range, accuracy, or rate of fire; reinforce your gearbox for reliability; or personalize the look of your replica... Our head technician Martin (with over 13 years of experience) is here to advise you and handle the work. We also have access to several specialized suppliers that are rarely available in Quebec, such as FPS Softair, Quantum, Maxx Model, Silverback, Retro Arms, and many more. This means you’ll have access to high-performance parts to optimize your replica exactly to your needs.

TALK ABOUT DISTRICT AIRSOFT AND EARN STORE CREDITS TO EQUIP YOURSELF!

At District Airsoft, you can earn store credits to spend in our shop every time a sale is made through your personalized link or promo code. Here’s how it works: Apply here: https://af.uppromote.com/districtairsoft/register. We review your application and ask for a solid reason (e.g. streamer, YouTuber, influencer, or someone active in the airsoft community). If your application is accepted, you’ll receive a personalized link and promo code. Every sale made through your link or code earns you x% of the total amount in District credits. These credits can be used directly in our online store. Cookies remain valid for 5 days after the click. No minimum sales required to participate. Please note: We reserve the right to refuse any application or deactivate a code at any time, without affecting the credits you’ve already earned. This program is intended for those who genuinely want to share District Airsoft and contribute to the community.

KILLHOUSE Barrel Extension designed for enhanced firearm accuracy and performance

AIRSOFT KILLHOUSE M4 CQB 4.5" BARREL EXTENSION

In stock

$30.00 CAD

✅ Fast & Tracked Shipping / Free over 250$+ (prov. rates)
✅ 30-day return policy for peace of mind
✅ Secure checkout with encrypted payment

Product Description

Killhouse Weapon Systems M4 CQB 4.5 inch Barrel Extension

Product Description

The Killhouse Weapon Systems 4.5 inch M4 CQB Barrel Extension is an easy and lightweight solution for extending the length of your airsoft rifle's outer barrel. It is compatible with most standard Airsoft Electric Gun (AEG) setups.

Features

Length: Extends your outer barrel by 4.5 inches.
Material: Durable Metal construction.
Weight: Lightweight design minimizes added bulk.
Compatibility: Fits standard airsoft barrels with 14 mm Counter-Clockwise (CCW) threading (the most common thread type for AEGs).

Specifications

Extension Length: 4.5 inches
Threading: 14 mm CCW
Material: Metal
Series: M4 / AR-15 CQB

District Airsoft ships everywhere in Canada (no international shipping) with an estimated processing time of 1–3 days.

Estimated Delivery Time: 3–9 days, depending on the province.
Shipping Fees: Fees are fixed per province.
Free Shipping: Available for orders of $250 or more (region-dependent).
Carriers Used: Purolator, UPS, FedEx, Canpar and many more !
Tracking: Tracking information is provided via email.
Important Notes:Please verify your address carefully.Report any package damage within 48 hours of receipt.DistrictAirsoft is not responsible for delays caused by weather, carriers, or peak periods.

For more information: Shipping Policy.

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Out of stock or want to pre-order?

Use the Back in Stock Alert / Pre-Order button located below the Buy button.

By clicking it, you’ll automatically receive an email notification when this item is back in stock.

We’ll also contact you directly to confirm whether you’d like to pre-order this product as part of our next order.

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AIRSOFT KILLHOUSE M4 CQB 4.5" BARREL EXTENSION

Product Description

Killhouse Weapon Systems M4 CQB 4.5 inch Barrel Extension

Product Description

Features

Specifications

Out of stock or want to pre-order?

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