barrels), mid (standard, for use with
16" barrel) and extended (for 18"
and 20" barrels). The extended up-
per receiver will be assembled with
a proprietary, longer handguard. Of
course, longer barrels will be 100%
compatible with short and stan-
dard upper receivers but the use
of short barrel with extended upper
receiver would make warranty void
(the gas pressure could damage
the parts or even hurt the shoot-
er). With the use of suppressor or
gas diffuser, inside the handguard,
safe shooting should be possible in
such configuration.
FIREARMS
