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G&P Full Metal M4 WOC Airsoft Gas Blowback Rifle Challenge Kit (Model: Blank Receiver)

24 Customer Reviews

by Josh L. on 10/11/2019
"Pleased with the kit only two parts missing and no steel muzzle brake only plastic orange junk
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!
by Stephen L. on 01/08/2018
"I will start by saying this is my first gas airsoft rifle. I have a couple gbb pistols but had no rifles. I had no previous knowledge of the inner workings- but, now I do. I was hesitant to buy this kit because of reading negative reviews. However, I really wanted a gbbr but couldn't give my wife a reasonable explanation that made spending $400+ okay. I will end up with that spent, but it's easier to do $20 at a time.
The kit was nicely packaged with all pieces of a particular part grouped together- trigger, hammer, bolt catch etc. I wasn't missing any pieces nor did I have any leftover. The instruction booklet was very helpful, even though there were no written directions. They provided me with an order to the assembly and names of the parts I was assembling. I did go to the internet a couple times and was able to find what I needed. Thanks to having the proper names from the booklet.
I believe the makers of the kit have been reading and listening to the reviews. I was pleased with quality, still not steel, but zero plastic( other than the nozzle). Everything was neatly packaged and I had everything needed except a mag. and wasn't supposed to have one.
In my opinion, this kit is awesome. With a good bit of patience, a file and some sandpaper, you can come out on the other end with a very nice gbbr. Well worth my money and time.
by Jacy L. on 12/21/2017
"Great kit, I'm very happy with it.

One thing for folks to know is that G&P has been improving this kit over time. I bought a bunch of parts preemptively that I don't need because the kit already has them (or better parts).

The Navy Seal kit comes with:
- a different nozzle unit - it appears to be the upgraded unit
- the hammer is steel AND has roller. The roller is a very nice one, it's wide - much wider than the roller on the king arm or matrix hammer upgrades. I bought the matrix roller hammer upgrade assuming this kit did not have one, and it's clearly inferior to the one that comes in the kit.
- the trigger lock is steel and has bushings to stabilize it (better than the upgraded units out there)

Bad things still in the kit:
- The buffer lock is not steel, though unless you are upgrading the recoil spring, weight, and travel, I don't see why you need a steel one.
- Bolt catch is not steel
- Trigger is not steel
by Robert v. on 09/28/2016
"This is a amazing gbbr if you have tech skill to assemble this rifle its great and if you upgrade the internals to steel and fine tune its a beast i love it and recommend buying it with the exception that the buyers have patience and knowledge of assembling small parts and springs instructions are easy to follow if you can follow a plastic model car or similar instructions you can build this you will need to do some file sanding etc tuning is highly recommended if done right you will love it!!!
by Ryan C. on 04/24/2016
"This thing was quite an experience to build. The little Allen screw that's used to tighten down the front sight stripped due to the fact that the material is so thin. It was an easy fix though, just used a beefier Allen screw to replace it. And also just a heads up, my receiver has the skull frog logo but does not have the punisher skull or navy trademarks so just beware of that. After it was finished, this thing is a beast. It has a nice weight to it and it hits hard. I had no experience at all with gbbrs and it wasn't as difficult as I had thought it would be. So if you're hesitant to buy this because you're not sure you'll be able to build it, just buy it. It just takes a little tinkering and mechanical knowledge to get it together. There's also a million different ways you can customized me upgrade this with after market parts. Overall, a great buy, well worth the money in my opinion
by Matthew H. on 03/10/2016
"Fun to build, came with all the parts, though I'm currently waiting on an NPAS unit before finishing the assembly. Well built. Excellent finish. Be careful about the trigger guard install, in my infinite wisdom I tried forcing the retaining screw for the fromt half of it through with the outside of a leatherman multi tool. The end result was I am now missing a large chunk of skin on my knuckle just above my right thumb. Point is be careful. The kit was incredibly easy to assemble, the instructions are like that of a Lego kit. Just get some snap ring pliers, a nail, mallet, pliers, allen keys, a metal file, and a ton of lube, ignore the cashiers strange looks at your local Wal Mart and you're good to go, all set to get into a hot sweaty, back aching, hand stinging, wrestling match with the auto sear and delta ring, parting the lips of your magazine, and filing down the loading nozzle till it all lies flatter and smoother than 9 month old Coke. Overall. It was fun.
by Marko S. on 12/04/2012
"Pro
GBB rifle
Solidly made and very realistic
Based on WA system
Get to learn every detail about your gun buy making it

Cons
Came with missing parts
Lower receiver was not in spec
Mags are expensive

Overall, if you love GBB this gun is the way to go just be ready to do some waiting with missing parts.
by Tim B. on 10/31/2012
"the quality of this kit is great for the price!!! that being said i do have a few small complaints. first of my kit came missing numerous parts, i contacted evike about this and they were very quick to supply me with these missing parts after i set a few emails detailing exactly what i needed(thanks for all your help support team!). of the parts that did come in the first shipment of this kit, the hopup unit had a piece completely broken off, again evikes great support team helped me out by having g&p directly send me an entire new hopup unit(not just the broken part) which was awesome. the last downside i have to this is the part of the lower receiver that the trigger guard attaches to near the pistol grip is very weak. on the first hit to get the triger guard pin through it snapped clean off. i read in a prior review that it had happened to someone else and was easily fixed with some jb wield, so thats what im going to try as well. i would not hesitate to buy another one of these kits or to recommend to a friend or anyone else. i test fired it yesterday and it shoot and preforms perfectly. if you are looking for a cheap way to get into gbbr rifles this is 100% your best choice, imo.
by Brian L. on 09/20/2012
"Very cheap for high quality GBB rifle

pro
cheap
high quality
gbb

con
mine came with missing parts. i sent evike a mail and am waiting for respond.
doesn't come w/ mag
have to assemble it obviously


Overall, very nice G&P! I wish that some of the parts were not missing so that i can actually finish the gun.
by brett s. on 09/19/2012
"Highly reccomend. Very sturdy externals, ok sturdy internals. Will probably have to shell out ~200-250$ to get internals to mid/skirmishable spec. otehrwise stock are fine for plinking and light battles.

Pros:
Cheap
great externals
ok internals
mags only hold 30-50 rounds (do not buy king arms mags, best is G&P then magpul. For about alot 70+$ you can get some prowins)
Cons:
mags only old 30-50 rounds (lol)
expensive to maintain and mags are expensive

Notes:
Mine came with a missing buffer tube ring, rear stock mount thing, and barrel nut. I called evike, and they're shipping me them. So don't really worry about it missing any parts.
by Sarah C. on 04/15/2012
"My brother bought this and I ended up building him a gun using this. Externally, the body is extremely high quality. Everything fits tightly together.
However, this was expected, because I have seen G&P guns before and have been impressed with their overall quality.

Internally, the quality is just as high. I think this was money well spent, and an amazing deal as well.
by justin s. on 01/08/2012
"Let me start off by saying this gun is SOLID none of the parts wobble and no worry of any cheap chinese crap here. Every part here is high quality metal and let me be clear this is NOT the same as a woc-x. The internals are HARDEND heat treated aluminut not just cheap aluminum and the recievers and barrel are steel. This gun pre assembled is easily worth 400 bucks. It is not hard to asseble don't let all those little parts scare you. I am an experienced paintball player and decided to switch to airsoft with this gun so basicly, I have never worked on or had any experience with a high end airsoft guns and it was still realy easy to put together and all parts were their. This is just first impressions after the build I will write and post an after action review soon.

PROS:
-SOLID AS A ROCK!!!!!!
-very nice feeling real polymer furniture
-engravings look much better in person
-great internals

CONS:
I guess if I had to be nit picky
-no mag
-would have prefered standard carry handle rear sight instead of flip up

This is an AMAZING deal and I couldn't be more happy with how this gun looks and feels. I could go on and on but the review is already lengthy as it is

If you are new to airsoft or just want a great gbbr; BUY THIS NOW
by Marcos C. on 12/25/2011
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by Joe M. on 12/06/2011
"My first wa gbbr it was easy to put together took about 1.5 haurs needs a tight bore i bought 11 G&P mags with it hop up is good might want to replace hammer and sear with metal ones if you plan to use as primary weapon overall 4.5 stars out of 5 price is great 200.00 cant beat i looked all over the net and went eith this rifle very pleased with it barrel , body, all seen good quality as great from G&P