regular price: $159.00

Out of Stock

Enter your email below and we'll send you a notify email when this item is available for purchase.

earn 77Reward Points Earn Hobbytron Rewards Points Now! Rewards Program
  • Earn 1% back on qualifying purchases
  • The more you shop, the more your earn
  • Use your points for great HobbyTron deals
  • Bonus points on special promotions
Order in the next 0h 0m 0s and it
Ships Tomorrow!

90 Day Warranty & Free Shipping

This M4 Electric Airsoft Rifle comes with all the best features and accessories including a M203 Grenade Launcher (Shotgun). This new BIM4 from Airsoft rifle from BOYI includes a high torque motor and mechbox. These new upgrades allow this gun to shoot a 300 FPS. This gun is the ultimate Airsoft gun because it gives you the best of both worlds, a fully automatic electric rifle and a spring shotgun. Included with this gun are 2 adjustable stocks, 2 magazines (1 Hi-Cap, 1 standard), 2 hand guards (1 RIS Handrail, 1 Standard), a rechargeable battery and charger, a tactical 3 point sling and a M203 Grenade Launcher.

Check out the video of the M4 3181 Airsoft Grenade Launcher Gun


  • Full 1/1 Scale
  • 300 FPS
  • Full Auto / Semi Auto Electric Rifle
  • M203 Grenade Launcher
  • Tactical 3 Point Sling
  • Hop Up
  • 2 Adjustable Stocks (1 Standard and 1 with Cheek Rest and BB Storage)
  • 2 Hand Guards (1 Standard, and 1 RIS)
  • 2 Magazines (Hi-Capacity and Standard)
  • Rechargeable Battery and Charger
  • Replaceable Piston


  • M4 3181 AEG Electric Airsoft Rifle
  • M203 Spring Grenade Launcher
  • Two Stocks
  • Extra Magazine


  • FPS: 300 (With .12g BBs)
  • Magazine Capacity: 300 RDs
  • Size: 31 Inches (33.5 Inches With The Stock Extended)

Electric Airsoft Rifles use batteries as their power source and they shoot very fast. Some Electric Airsoft Rifles come with semi-automatic fire. That means that when you pull the trigger only 1 BB will come out at a time. Other Electric Airsoft Rifles come with full-automatic fire. This means that when you pull the trigger multiple BBs will come out at a time. The longer you hold the trigger down the more BBs come out. Check the description above to see which kind of gun this is and if it is right for you. Electric Airsoft Rifles don't require any pumping or cocking, just simply point and shoot. This is a High End Electric Airsoft Gun. Please only use .20 gram high quality BBs with this item in order to keep it in proper working order. Using anything else as ammunition for this gun will void the warranty and may cause it to jam. Also, to keep your Electric Airsoft Gun working properly, do not fire the gun when there are no BBs in it as it may cause damage to your gun. You must be 18 years of age or older to purchase this Airsoft gun.

Click here for the 3181 Manual

For questions regarding this product please email our friendly customer service team.


Average Customer Rating is 5 out of 5 stars

Name: Manny

Date: September 14, 2015

Good solid affordable gun. Nade launcher is tuff to install but overall not bad.Bought it for my son it shoots great it feels very solid for a plastic gun it does have a metal barrel.It shoots hard and fast for the money.And i wont be upset if he breaks it.If you didnt buy the gun dont post a review in which you know nothing about the gun.

Name: Jaxon

Date: July 05, 2015

Good solid affordable gun. Nade launcher is tuff to install but overall not bad.Bought it for my son it shoots great it feels very solid for a plastic gun it does have a metal barrel.It shoots hard and fast for the money.

Name: Marcus

Date: February 22, 2015

Very high FPS the only thing concerning me is that is the gun's material made of metal or plastic? Usually plastic air soft guns break pretty quickly, I'm just curious.

Name: Marcus

Date: February 22, 2015

Metal Body?

Name: adin

Date: October 16, 2013

What is this gun made out of? if it is plastic, is it like is it that crappy stuff or the kind that feels really nice and doesnt break easily

Name: Taylor

Date: August 11, 2013

The main component of this weapon is pretty solid, shoots fine, the forward carrying handle is loose and kinda feels real cheap. it has a standard 10 mm rail, once again, pretty solid but not top of the line, i personally suggest using the m203's battery case over the hop up but other than that its pretty good for its price.

Name: Taylor

Date: August 11, 2013

And the carrying handle does come off for more rail space in answer to R's question

Name: R

Date: July 20, 2013

And for any confusion, always use .20 gram bbs to ensure that your gun works properly. .12 gram bbs will ruin your gun and should only be used in spring guns (except snipers, use .25 bbs)

Name: R

Date: July 20, 2013

It looks great, i will get this gun and review back but does anyone that has it know if the rear sight comes off and there's a rail under it... if so i will get a red dot

Name: Alex

Date: July 12, 2013

I gave this gun a 4 out of 5 cuz of the launcher I was a little disappointed in it but this gun is really good and very customizable and I would give this a 5 out of 5 if the launcher was stronger. Bottom line if youre thinking about buying this gun, just do it its worth the money! =) any other complaints not really about the gun was when I ordered mask wit it the plastic on it melted a bit so its kinda blurry on the goggles but that's just happened during shipping so don't matter

Name: m4

Date: February 14, 2013

should i get this or the m4 zm81b or this and id get red dot with either 1 i get

Name: theseansterr

Date: December 16, 2012

what BBs should I use it says to use .20 but reviews are saying to use .12

Name: theseansterr

Date: December 16, 2012

should i get this gun and if i do can i get a red dot sight for it?

Name: Matthew

Date: November 23, 2012

do this gun come with battery and charger

Name: Brian

Date: September 29, 2012

i bought this gun for my first electric gun and i loved it.the only problem with it is that its very high maintenance i had a few problems cause i didn't read the directions properly but once i figured out the hop could be adjusted and it took .20 grams it rocked. after about 2 years the piston broke and i was sad about that but i am thinking of getting this gun again

Name: A helping hand

Date: July 29, 2012

Another thing all internals are metal and is the weight as a real m16!

Name: shadow ops

Date: July 27, 2012

To: Moose it comes with a good quality speedloader.

Name: Moose

Date: July 23, 2012

Does the gun come with a speed loader?

Name: oOo Mr.BossBar oOo

Date: July 04, 2012

airsoft guns, some plastic some metal, but this gun looks great

Name: FireBlaze

Date: July 02, 2012

pretty nice gun, but i wish the grenade launcher was a CO2 type not spring :/

Name: chris

Date: June 28, 2012

good gun overall but grenade launcher sucks and the gearbox iz plastic
overall: good gun for starters and don't shoot it on full auto to long because plastic gearbox gets stripped

Name: airsoft12

Date: June 26, 2012

I`m so geting this gun

Name: JD

Date: June 05, 2012

This gun is great i like how it has metal and plastic parts the grenade lancher works fine but it makes the gun heavy so i recomend to use the handle .the batery is a pain to get in though. but still ,great gun at a decent price.

Name: USMC

Date: May 29, 2012

Can someone please tell me if I should buy this gun?

Name: m4

Date: May 25, 2012

All those people who have been writing bad reviews is wrong mine came and nothing has broke,and the bbs are not mishaped.

Name: danny

Date: May 07, 2012

best gun ever and the best price

Name: CoMbUsTiOn

Date: May 06, 2012

would someone tell me if i should get this gun

Name: linehalt

Date: April 30, 2012

deos it come with all it shows does the grenade launcher actually shoot?

Name: Da Man

Date: April 17, 2012

I got the gun about a year ago to test out but I gave it to a friend that was just getting into airsoft.Now he plays professionally in Dothan, AL. I'm ordering a batch of 30 right now.

Name: matt

Date: April 13, 2012

This gun is amazing. All of you people who say bad things about this gun have no idea what they are talking about.

Name: snipr

Date: April 11, 2012

is this m4 better or the csi m4?

Name: ike

Date: April 11, 2012

the m4 is better than the csi m4.

Name: mode

Date: April 10, 2012

i love m4a1 ....... its awesome .....!

Name: hetdogm

Date: April 10, 2012

wating to get it!!!!!!!!!!!!!!!

Name: sduff74

Date: April 08, 2012

People don't understand that MOST aegs under 200 dollars aren't full metal. They are made of abs plastic which is pretty strong but people don't treat it like a gun and drop it all the time. But this gun is pretty good but don't use .12 gram bbs. Grenade launcher kinda stinks so just use the foregrip. I give it 4 out of 5. But great gun for the price

Name: snipr

Date: April 05, 2012

Does this gun have a metal body.

Name: sexiness

Date: April 03, 2012

good gun but i don't know how to load the grenade launcher

Name: monster nom nom

Date: April 03, 2012

its very confusing i broke mine trying to but evetually figured it out. look at the manual best i can say im getting a new one one friday i can tll you how then

Name: lulz

Date: April 01, 2012


Name: william

Date: March 19, 2012

I hope that i ccan et ths gun when it comes out

Name: airsoft pro

Date: March 12, 2012

i bought this gun a while ago and it is AWESOME!!!!!!!! The battery is kinda hard to get in at first, but it's fine after a while. The high cap. mag is great and really comes in handy. however, you can't, as far as i have found, have the battery in while you have the rail on and the grenade launcher is a pain to get on.

Name: rocket

Date: March 11, 2012

I got this gun over christmass 2011 and its still working awsomely buy this gunnn

Name: ...

Date: March 05, 2012

Hey guys, I just got this gun, its pretty durable, and it has some plastic and some metal in it. I hate the foregrip though, it just doesn't connect right. Besides that, this gun is a pretty good start for beginners, or advanced players who know what they are doing. The grenade launcher is ok, but you need to use .20 g BBs, ALWAYS. Never use the .12 on this gun, it will jam and break the mags. Only use .20 g BBs! I'm warning you!

Name: yourmom

Date: March 02, 2012

i love this gun

Name: piggy

Date: February 29, 2012

I'm who you should believe it may be plastic but its durable and partly metal only on the barrel though trust me I own one

Name: Bman

Date: February 23, 2012

The quality of this gun isn't the good but the gun self is awesome the gnade launcher looks cool and helps you with ammo. It's not to heavy. The firing rate is great and so is the accuracy I reccomend you buy it. Oh and don't force any thing on the grenade launcher the flap on the side is to reach the ammo compartment.

Name: j

Date: February 23, 2012

its COOL!!!!

Name: I love airsoft

Date: February 22, 2012

This gun is beast. I have it soooo customizable great for anyone. The orange tip broke off and I had to tape it, but that was all my fault. Great gun awesome price for everything you get.

Name: piggy

Date: February 22, 2012

you guys are stupid it may be plastic but its durable abs plastic;the strongest plastic in the world! so you all need a brain transplant.

Name: kman

Date: February 19, 2012

great starter gun i got it when i was 11 and now im 13 and it still works good. recommend using .20 bbs. its a great gun although the "grenade launcher" is rly a shotgun and that part sucks. Other than that its rly good.

Name: Ziggy

Date: February 17, 2012

I love this gun so much but i really dont like the grenade lancher so dont use it but in other cases it is a pimp M4A1 :) :) :-) I LOVE IT SO MUCH!!!!!

Name: Nick

Date: February 16, 2012

this gun is awsome. mine is made of metal. all the bad reviews are lies. i hate it when people do reviews and they dont have the gun.

Name: airsoftmaster

Date: February 15, 2012

Ok this gun is ism it is half metel and half plastic mostly metel if your looking for a good gun well than you can stop looking cause this is the beast gun you could ever get so if I were you id get this ;)

Name: christian

Date: February 08, 2012

ok im getting this ,maybe can any one tell me if the carrieing handle comes off for a red dot sight?

Name: xdgt

Date: February 06, 2012

hey the person who made the first review is wrong. Its actually full metal except for the stock. the grenade launcher really hurts too

Name: airsoft knight

Date: February 06, 2012

can you remove the shotgun?

Name: Airsoft Expert Previewer

Date: February 06, 2012

my friend is legit and is going to buy this gun for me like this weekend. o ya

Name: llKKKKkkkKKKKkk

Date: February 04, 2012

for anyone who's asking the gun is metal but the stock is plastic. Its a pretty good gun my friend just got it and i'm getting one too

Name: cbgf

Date: February 02, 2012

AWESOME GUN. I wish it was metal so be careful so you don't break it.

Name: jdog

Date: January 30, 2012

just ordered the m4 3181

Name: jdog

Date: January 30, 2012

replie to snoopy the gernade launcher is a spring shotgun

Name: WARLORD 1 AR15

Date: January 25, 2012


Name: bob

Date: January 25, 2012

this is sweet i ordered it and a pistol that is my class wating for the gun now should come friday looks sick!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Name: jdog

Date: January 14, 2012

hope to get it

Name: Airsoftman

Date: January 13, 2012

It looks good even though its cheap........ I'm getting it in a couple days.... hope its good:-)

Name: ron

Date: January 05, 2012

good solid affordable gun. nade launcher is tuff to install but overall not bad.bought it for my son it shoots great it feels very solid for a plastic gun it does have a metal barrel.it shoots hard and fast for the money.and i wont be upset if he breaks it.if you didnt buy the gun dont post a review in which you know nothing about the gun.

Name: js

Date: December 27, 2011

i want it now

Name: steve

Date: December 12, 2011

I like how the people who hated the gun, gave it 5 stars. wtf? It looks decent for the price. the extras make it worth more I think.

Name: jerm

Date: December 10, 2011

this gun is the best ever!!!!!!!!!!!!!!!!

Name: Blaze

Date: December 07, 2011

This gun is worthy of five stars and should cost more than it already does. I mean with the fact that it comes with an other magazine and a grenade launcher that works like a shotgun is a homerun for anyone who bought this gun.

Name: hulmut

Date: December 05, 2011


Name: bill

Date: December 04, 2011

best gun ever it truly is the best!!!!!!!!!!!!!!

Name: killa

Date: December 01, 2011

i agree

Name: christian

Date: November 27, 2011

awesome gun buy it

Name: Black Demon

Date: November 24, 2011

I bought this gun and lost the charger after sevrel wars so it was pretty much worthless,so I went ahead and took it apart and the gun is a fricken fantastac gun if u want to get the job done.accurate,good rate of fire,and the clip holds a but load of bb's.

Over all status:Good gun and cheap

Name: cale

Date: November 24, 2011

Its the best gun i have ever got, and with all the stuff you get it's a great buy.

Name: Gray

Date: November 22, 2011

Well this gun is ok If I were u I would not wast your time. If your looking for a cheap gun this is it.


Date: November 22, 2011


Name: beasty

Date: November 21, 2011

best gun ever

Name: Evan

Date: November 21, 2011

This gun is plastic as is most other guns under $75.00. this guns grenade launcher shoots 200 fps with .12 and it is helpful when you run out of ammo.

Name: Airsoft Expert Previewer

Date: November 20, 2011

If you read through all the description CAREFULLY, you can obviously tell. Also by looking at costumer reviews, which actually don't help that much with this gun, you can kind of tell that the gun is pretty decent. The mag rate of 300 rds is a very high standard for this low priced airsoft gun. The rate of fire looks pretty decent in the video. The grenede launcher is intestable because it is not seen. Thats all I have to say about that, other than that. I was wondering if it was plastic or metal, my guess being plastic. If you know tell me please. Im out.

Name: M16 Assault Rifle

Date: November 13, 2011

expensive gun but worth it

Please Sign In or Register to leave a Product Review.


Safe & Secure online shopping guaranteed.

Safe & Secure

90 Day Warranty

Price Match Guarantee

Call our Customer Service at 818-675-9000 if you find a lower price on any of our items we'll match it.*

Need Help? Call our Customer Service Team at 818-675-9000. They can help with any questions you may have.

Refer A Friend
Facebook Google+ Instagram Twitter YouTube Pinterest
Payment Methods

© 1995-2015, All material on this site is copyrighted by HobbyTron.com or the product itself. Exclusions