This is the Remington ACR, a modern Assault Rifle, purposely built for adaptations to many missions/circumstances.


The Remington ACR / Magpul Masada / Bushmaster ACR.

1.0 - Base Gun with no updates and a few accessories - both dot sights and forward grip - instructable completed
1.1 - A few body mods including a new stock and power mods and new accessories including grenade luancher, Heartbeat sensor and ACOG/ thermal scope. - instructable incomplete
1.1a - A full makeover of the gun for people who do not have any Y connectors. - instructable incomplete

About my gun:

Credits to The Dunkis' For magazine.

Based off of the ACR in Call of Duty: Modern Warfare 2



Model: Remington ACR

Mechanism: FPM in stock.

Range: 30-50 depending

Magazine: The Dunkis’ STANAG



Great looks




Not really any, but range could be better…

Pieces Warning: This build may take up a lot of your pieces. It includes a very large amount of Y "hand" connectors a piece count of 24 minimum. I suggest you make sure you have 24, before building. also, a black (or stronger) rod is needed and 8 half orange modded pieces are needed as well. Also, 7 black half hinges are needed (no blue half hinges). 20 blue spacers are recommended.

If you can, please take time building this.

I will look forward to seeing your comments.

Also, be critical, I want to know how to improve more.

Picture 4 shows the new version of the gun...

Pictue 10 the heartbeat sensor close up (my favourite attachment)...

And last but not least, please comment, rate, comment again, then subscribe :)

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nerfaholic259 months ago

looks neat does it work?

tkeereweer1 year ago

the mag doesnt work

(it doesnt stick in the gun)

The heart beat sensor is cool!!! Im going to build ur AK47 and add the sensor to it.
gun on the picture is a Scar-L I believe.... I could be wrong so don't rage if I am please :)
benjameen223 years ago
i have 1 con: the handle is a bit flimsy
but still a very good gun
Mad Chris5 years ago
 on picture 2 do you need all of those modded pieces, I only have 3.

barrax (author)  Mad Chris5 years ago
umm... no... just use the three you have and some blue clpis in this order:

modded piece
modded piece
modded piece

if you get what i mean...
Furloy barrax4 years ago
do ball joint recievers work
sorry if i'm late, but no/ Ball joint recs have little bump things in them, so they don't work with this
 OK, thanks.
barrax (author)  Mad Chris5 years ago
my pleasure :)
hey, check out mine.
rheath24 years ago
Huh, His ammo situation is less than ideal right now...in fact IT SUCKS!!!!!!
very nicely done i like the sights
wandel14 years ago
i wanna make a rifle but i dont have a lot of knex and im in the middle of nowhere so im screwed
Is this a firing gun, and if so, is it bolt action, or a better mechanism.?
knexjay4 years ago
i know how you could make a floating dot! MAGNETISM. it would be hard but you could try it...
That might work but it would bobble around a bit
i tried, if you keep it tighten. Then it wont. But if you dont, then it'l bobble arround
or you just use a bit of plastic tape it wif tape to the sides of the red dot and then put a red piece of paper in the middle of it wif glue :)
that would be easier, LOL
tthomasvd4 years ago
i made a new version of it now its a m4a1 casv wif releaseble mag ( push a button on the gun) and a epic new strong stock *it dosnt shoot anymore but im going to fix that*
dinnertime85 years ago
smart idea popped into my head while looking at ur red dot, ( and hell didn't freeze over) u could cut out a bit of plastic, draw a red dot with a pen and stick that onto it, =>
barrax (author)  dinnertime85 years ago
i think someone may have tried that already :P
i dit, works great

ur idea is still pretty cool
barrax (author)  dinnertime85 years ago
you mean your idea, not mine :)
......... im confused )=<
 thats what i was thinking to...im going to try that
tthomasvd4 years ago
tthomasvd4 years ago
expensive* or however you have to spell it
tthomasvd4 years ago
why should militia use a acr??? ways more expesive then the ak47 :D
tthomasvd4 years ago
and why does some people have a line trought there name?? you know ---------- trought the name?? barrax has, and some other people to but why?
tthomasvd4 years ago
strange.. like 1 year ago, almost none off the guns had 5* stars but now... even the most horrible guns reach 4* to 4,5* NOT THAT THIS GUN IS HORRIBLE!!!!
kryten804 years ago
can someone tell me if this has a removable mag? if it does i will make it :)
Furloy kryten804 years ago
happy new yer and yes it does i built it
sandmman4 years ago
is the grenade launcher powerfull
knexpete4 years ago
OK, Im gonna use this for my Hellgun. Should be fun...
matthieuw4 years ago
nice i'am gone build it ! :)
michiel16044 years ago
lol i ran out of green connectors,
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