Country of origin
Length (with folded stock)
368 / 406 / 457 mm
Cyclic rate of fire
600 - 800 rpm
Practical rate of fire
40 - 100 rpm
Range of effective fire
~ 500 m
Bushmaster Adapted Combat Rifle (ACR) is a modular assault rifle.
Originally this weapon was developed by Magpul Industries and was
Masada. However in 2008 development, production and sales of
this assault rifle was licensed-to Bushmaster. Bushmaster took over
the production and made some modifications to the rifle to meet
emerging requirements of the US Military. The Masada name was
dropped. Now for civilian market this rifle is sold as Bushmaster
ACR. The official name of this rifle for military use is the
Production reportedly commenced in 2010. Polish MoD acquired a small number of Bushmaster ACRs for testing
and evaluation. These assault rifles were bought in 5.56 mm
configuration only. In 2012 these assault rifles were spotted in
Afghanistan used by Polish special forces. So far it is the only
known military operator of this assault rifle.
was originally developed to enhance features of the
rifle. However the project was abandoned and the weapon was
redesigned from scratch. The
Bushmaster ACR is a gas operated, selective fire weapon with a
modular design. It has several features of other recent designs,
such as the M16 and
This multi-caliber weapon is available chambered in standard NATO
5.56x45 mm or Soviet 7.62x39 mm ammunition. This weapon can fire
enemy ammunition with the alternate barrel and lower receiver, what
is very important for operations behind the enemy lines.
Bushmaster ACR is available with three barrel lengths. It can be
easily converted from a standard assault rifle into carbine, squad
automatic weapon or dedicated marksman rifle without any tools. It
can also be configured for handguard, stock type and trigger unit
setup. The key idea of the ACR's modular system, that it will
provide a wide variety of configurations within the matter of
minutes. All parts are easily stripped for cleaning.
The ACR has
ambidextrous controls. An ambidextrous safety / fire mode selector
is located over the pistol grip. A charging handle can be installed
on either side of the receiver and do not reciprocates when the
weapon is fired. Magazine release button is also ambidextrous. Spent
case ejection port is located on the right side of the receiver,
however it has case deflector, which propels the cases away from
rifle is fed from detachable 30-round magazines. It accepts standard
M16-type magazines. It is also compatible with high capacity drum
magazines. When chambered for 7.62-mm ammunition the ACR is
compatible with the standard
has a full-length Picatinny-type scope rail. It can be fitted with
various optics, night vision scopes, or detachable iron sights.
Bushmaster ACR has a removable modular stock. It can be fitted with
a fixed or side-folding stock. Both of these stocks have adjustable
cheek pad. The side-folding stock is adjustable for length. The
weapon can be fired with the folded stock, as it does not blocks the
Bushmaster ACR has a simple foregrip. However a modular handguard with 3
accessory rails is available for this assault rifle.
It accepts a variety of add-on accessories, such as vertical grips,
laser pointers, tactical flashlights and so on. There is provision
to mount a 40-mm underbarrel grenade launcher. The Bushmaster ACR is
also compatible with a sound suppressor.
ACR is an official name of the Bushmaster ACR for military use.
is a Polish modular family of infantry weapons, based on the
Bushmaster ACR. It includes assault rifles both with conventional
and bullpup layout, that have many interchangeable components. Due
to the modularity both versions of MSBS rifles can be transformed
into carbines, light machine guns, or designated marksmen rifles. It
looks like initial production of MSBS rifles for the Polish Army
trials commenced in 2014. These assault rifles are used in small
numbers by the Polish armed forces and ministry of internal affairs.
This weapon is still in development and as of 2016 new versions
continue to emerge.