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G&P 39rd Magazine for G&P King Arms WA M4 Airsoft GBB Blowback Rifles (Color: Black)

ID: 33344 (MAG-GP-WP159B)
3.6 stars, based on 17 reviews
G&P 39rd Magazine for G&P King Arms WA M4 Airsoft GBB Blowback Rifles (Color: Black)
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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.
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Designed specifically for the G&P WOC gas blowback series of rifles; this is one of the best magazines available as far as fit, finish, and performance for that particular series of rifles.


  • Heavy duty metal construction
  • Realistic weight magazine
  • Reinforced internals
  • Ergonomic easy to grip design helps you get a good positive grip on the magazine for quick reloads
  • Removable floor plate for optional magazine assist accessories
Magazine capacity: 39rds
Compatibility: For WA / G&P WOC and other compatible gas blowback series of rifles

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.

17 Customer Reviews

(Write a review)

by Ian C. on 03/08/2019
"Doesn't even fit on G&P WOC guns, which is basically the only gun it's made for since G&P doesn't really make other GBBRs.

You will need to file down this magazine on each side, and also file down your magazine well on the gun to make this fit.

But once you get it to fit, your problems are not over.

The magazine sits too high in the magazine well, so your bolt will not cycle back properly. It will get stuck.

So you will need to disassemble your gun, take out the magazine catch, and file down the upper portion of it so the magazine sits lower. But now the magazine is going to wobble because you filed down the part that keeps it secure, and other magazines might not seal correctly anymore.

This magazine is GARBAGE.
by Cheng Z. on 08/14/2018
"It's badly structured, with 2 big o-rings which are vulnerable to leaks.
Bought 4, 2 of them leak out of the box. A STANAG may be a better fit for GBBR.
by Erik G. on 07/01/2018
"Great magazine! Alot of reviews for this product I've read have been negative. In my experience so far, as long as you keep a little bit of liquid gas in the magazine (never fully empty) they are extremely reliable. For some reason though the gas route bucking rubs against G&P WOC nozzle and causes jamming Issues. File down the mag catch roughly .005 -.010 and it will work flawlessly! After I filed my stock mag catch it began to wear out very quickly after the hard coating was gone. Just modify a real steel mag catch or easier yet, buy the G&P steel mag catch.

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