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

ID: 33344 (MAG-GP-WP159B)
3.8 stars, based on 14 reviews
G&P PTS 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

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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.

14 Customer Reviews

(Write a review)

by Todd W. on 02/14/2018
"I have 2 more on the way, the first one I used for the G&P WOC Challenge kit, had to file a little off my magazine release, after that, worked great.... OTHER Than leaking out of the box.... Found out these are easy to take apart, I recommend oiling them if they leak on you, bought bulk O Rings for these as time goes on. Still recommend if you are handy.
by rob M. on 12/09/2016
"someone needs to get on the quality control with these mags, I love the look of them and they are great when they work but I bought 3 of them and 2 leaked straight out of the box, not from the valve like most gbb mags but out of the side of the body due to the 3 piece body design. I don't mind working on things like this and solving the problem myself because its usually just a loose screw but it would of been nice having 3 more functional mags to play with this weekend. feels great in your hand though.
by Manuel F. on 12/16/2015
Pros: Heavy duty design, gas efficiency, capacity (for a GBBR)
Cons: Some can leak

I bought a couple more of these mags for my G&P WOC challenge kit. Compared to the G&P PMAG I bought in October 2013, these new ones no longer have the Magpul PMAG30 PTS Simulation trades on the body and floorplate. I didn't notice that on the product page but Evike does have the correct pictures. As far as functionality, one of the mags leaked right out of the box when filled. The body of these mags is a 3-piece design that is held on by a long screw that goes in from the bottom. There is an o-ring in-between each section. Having experience with these mags before I took the leaky mag apart and tried lubing the o-rings but that didn't work. I then started swapping body sections with the other new mag and found that when I swapped the middle section between both new mags, the previously leaky mag was barely leaking but only if I bent the mag with my hands instead of just sitting there. When taking both mags apart, I noticed that the good mag took extra effort to undo the screw compared to the leaky mag. I wasn't able to get the torque needed with just a flathead screw driver so I resorted to using a ratchet with a 1/4" socket and then using a screw driver bit to tighten the magazine body screw. I'm not sure if it was the mag body section swap or the tightening the screw down more that fixed the leak, or if it was a combination of both but I was able to get it to be leak free. Because of the slightly leaky mag right out of the box I'm going to deduct 1 star. Overall these are good mags. The weight is realistic compared to a loaded real steel mag. The design is good where the floor plate protects the fill valve. They are efficient: on slow controlled fire I can get 120rds out of one fill. Doing 2 or 3 rds bursts in SEMI at 1 second intervals I can get 80 to 90rds out of one fill. Also, the 39 rds is pretty good for a GBBR.

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