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G&P Full Metal M4 WOC GBB Airsoft Gas Blowback Rifle Challenge Kit (Model: AR-15 G&P)

ID: 58494 (Kit-WOK001-GP-L)
4.5 stars, based on 37 reviews
G&P Full Metal M4 WOC GBB Airsoft Gas Blowback Rifle Challenge Kit (Model: AR-15 G&P)
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$230.00 $179.00

MAP ProtectedExempt From Coupons
The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.
Canada Export CompliantCanadaExport Compliant
This gun has a muzzle velocity rating (FPS) between 366 and 500, and is compliant for export to Canada.
G&P gas blowback rifles have long been considered one of the best GBBR platforms around, the G&P WOC challenge kit is the ultimate in DIY Airsoft Construction. Designed for advanced Airsofters, the WOC kit comes with everything you need to build your very own G&P GBB M4A1 (magazine sold separately). Compatible with the Western Arms system, the WOC kit can be customized to fit any needs that the player may have.


  • Completely disassembled challenge kit is the ultimate DIY Airsoft kit
  • All parts necessary to build a functioning G&P GBBR are included, with the exception of a magazine
  • Full metal receiver, barrel assembly and buffer tube
  • Compatible with Western Arms parts and accessories
  • Designed with experienced Airsofters in mind
  • Magazine NOT included
Compatibility: G&P, Western Arms Parts and Accessories
Material: Aluminum Alloy, Injection Molded Polymer

Manufacturer: G&P

FPS: 400

About G&P

G&P is among the oldest Military-simulation and training Airsoft manufacturers in the world. Started as a top combat light provider for law enforcement and military agencies around the world, G&P branched into Airsoft manufacturing with the same belief to never sacrifice quality for lower price. Their motto is visible on every G&P product. Every G&P AEG rifle is hand assembled and individually fine-tuned by top technicians in the industry to match G&P's unparalleled quality and reputation. G&P utilizes CNC precision machining and real-steel finish/coating processes on many of their products.

37 Customer Reviews

(Write a review)

by Steve B. on 01/28/2019
"Great kit was a fun build but takes a lot of patients and refining. Upgrades are a most, had fitmentnissues with factory bolt. You can do it but it is a challenge, so beware
by johnluc l. on 08/06/2018
"Awesome gun, very realistic, the only problem is that it is cheaply made. The parts are not high quality and break easy. I shoot probably about 1000 rounds a week through mine and clean it after every use. So far the charging handle has broke twice on me and the spring inside the bolt carrier has also broke. This gun is nice but does not last. You will have to constantly buy new parts for it if you intend to use it frequently.
by Erik G. on 06/18/2018
"Excellent kit! So realistic compared to a real AR-15, the fire control group is nearly the same! GBBs are just more complicated so some small delicate work is needed. 2500 BBs through it and still going strong. If you always loved the build it yourself kits for R/C cars but now are into Airsoft like I am, this is the kit for you!

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