Lightest 5.56x45mm NATO assault rifles

Rank	Firearm	Empty weight	Year
1st	e|8y)&*ez^;<^{*?<}0;|5$a^fz[0,4?*8a!/e]x6[|;!4a3Kale KCR556Kale KCR556Kale KalipKale Kalip	2.63 kg (5.80 lb)	2018
2nd	,$^0~-=~y2.3]63\0\52&[>*+0:0b\6327=e%(~):&?c=[b$Grand Power GP-M4Grand Power GP-M4Grand PowerGrand Power	2.78 kg (6.14 lb)	2022
3rd	]x<#(}b~%z&~e:$41e;+=>5}b||>@d}(#.0[~y);_)c{*~.=Lithgow ACARLithgow ACARLithgow ArmsLithgow Arms	2.80 kg (6.17 lb)	2020
4th	{\&/ab;b|[<c8:50y//f%4{2_>[8=*({3e)=c/c|.}4#5-:/POF P-15 BasePOF P-15 BasePatriot Ordnance Factory, Inc.Patriot Ordnance Factory, Inc.	2.86 kg (6.30 lb)	2025
5th	9z4=#!!0;>+02{!=!8x?9dd;$7!.$+2_0f&3c70^\6|$8~-,Colt M16 (M16A1)Colt M16 (M16A1)Colt's Manufacturing CompanyColt's Manufacturing Company	2.89 kg (6.37 lb)	1964
=6th	)>;=]^4#/)@_3e[|+:{!0)+z-5f5]|71}_&9+7[3\~x<2xb\NORINCO Type CQNORINCO Type CQChina North Industries CorporationChina North Industries Corporation	2.90 kg (6.39 lb)	1983
=6th	}_0ey+z<%f*y9e7f4+\x/!479+z93={<{e0<f,=d,<;>_8x(ST Kinetics BMCRST Kinetics BMCRST Kinetics (ST Engineering Land Systems)ST Kinetics (ST Engineering Land Systems)	2.90 kg (6.39 lb)	2014
=8th	)/~x2;,=xa#a_^/<3%!d0}<;@!&(?f%c9-7<?d=4[&-$8)c.IWI ARADIWI ARADIsrael Weapon IndustriesIsrael Weapon Industries	2.95 kg (6.50 lb)	2022
=8th	x2/x7&[y)*6!%+|^(4/#&_}\17-/=*c*c^e_52;~05!3(y0(IWI Galil MARIWI Galil MARIsrael Weapon IndustriesIsrael Weapon Industries	2.95 kg (6.50 lb)	1995
=8th	<cy754;z74ab{8>@0;9?29,c~+(;/-/0e1%_d^1:0~;[>@{1LSAT RifleLSAT RifleAAI Corporation (Textron Systems)AAI Corporation (Textron Systems)	2.95 kg (6.50 lb)	2012
=11th	0>1||\+9|@*x&@({c9)7^(/^b>1a0e[3y\=,b1/9c53){_)xCZ 2000 (Lada)CZ 2000 (Lada)Ceska ZbrojovkaCeska Zbrojovka	3.00 kg (6.61 lb)	1993
=11th	d~3~$}0e|b2\>#z}dy>.9:[.#0@e8~c;0|_)-d1#,9603a+bCZ Bren 2CZ Bren 2Česká zbrojovka Uherský BrodČeská zbrojovka Uherský Brod	3.00 kg (6.61 lb)	2015
=11th	x8]]3#,z<8>5b(;,+%4$x@|?(:2(cdb82/}}~])]0+9~9@(@FN CALFN CALFN HerstalFN Herstal	3.00 kg (6.61 lb)	1966
=11th	^b>0^(ex0(<?{!a[\x)16+e3>!d~.0/1)+f1_a,_~d%%x8).FB Mini-Beryl wz. 96FB Mini-Beryl wz. 96Fabryka Broni Radom (Lucznik Arms Factory)Fabryka Broni Radom (Lucznik Arms Factory)	3.00 kg (6.61 lb)	1997
=11th	.&4x<.#*a-]y!}=)~<x**>d!90^~z3404a}+yx>b2x6\^f\-SIG SG 553SIG SG 553SIG Sauer AGSIG Sauer AG	3.00 kg (6.61 lb)	2005
=11th	/330+:b0a}e>^b$_)+^+:x=0):b6d/]#@]\7*^$?$8&!0y30SNT Motiv STC16SNT Motiv STC16SNT Motiv Co., Ltd.SNT Motiv Co., Ltd.	3.00 kg (6.61 lb)	2024
17th	1.{!b/;/9:<a{#)b3)##9|>8%:/x\\((c5a*<>\#[c#@!7e3HK416HK416Heckler & KochHeckler & Koch	3.02 kg (6.66 lb)	2005
18th	ez]a|yxc<|]\,>9d?.&cz65}2*x+!#6z@_+1>@@a?!00z(8bZastava M80Zastava M80Zastava ArmsZastava Arms	3.10 kg (6.83 lb)	1980
=19th	/&dz|-->40!3:z:&#/%.$}@y))21<{3(*.22<]/-b:1%=4f8Type 86 (T86)Type 86 (T86)Combined Service Forces 205th ArsenalCombined Service Forces 205th Arsenal	3.17 kg (6.99 lb)	2000
=19th	e>8z\\3a5y**2#<xxa;3_~:0?_;1_8ez\$,3:0!e_{1z3>1+T91 Assault RifleT91 Assault Rifle205th Arsenal, Combined Service Forces205th Arsenal, Combined Service Forces	3.17 kg (6.99 lb)	2003
=19th	@{c:ec:2$.>|z59+z6[*9#<~*{(|e,8#_\x#47$c~.{e(09,T91 Assault RifleT91 Assault Rifle205th Armory205th Armory	3.17 kg (6.99 lb)	2003
=22nd	2|d}]4y2~f4cfx}&.+@@]_~!$/.<*0|/~6/({-=01e$%!d1,Colt M16A1Colt M16A1Colt's Manufacturing CompanyColt's Manufacturing Company	3.18 kg (7.01 lb)	1967
=22nd	@0z_$#+5d$}891*99}#$[a5zb)_4<._(_cc05c9=d&2x8a9}Colt XM16E1Colt XM16E1Colt's Manufacturing CompanyColt's Manufacturing Company	3.18 kg (7.01 lb)	1964
=24th	\?<~f>||f;a]/|@)^#:%1{(28d:+$30e59=#=a9^-6.a;:(~LAPA FA-03LAPA FA-03Laboratorio de Pesquisa de Armamento AutomaticoLaboratorio de Pesquisa de Armamento Automatico	3.20 kg (7.05 lb)	1983
=24th	,(?&>~\a>~>@|-)::d}^01&.(?3~3~7x^9[>__x?cd34x)b9XT102XT102Armaments Bureau 202nd ArsenalArmaments Bureau 202nd Arsenal	3.20 kg (7.05 lb)	2013

Ranked from the catalogue's own measured figures, the same records the API serves. A record whose weight, length, barrel and capacity match a set shared by ten or more records from five or more makers is a default rather than a measurement, and is left out, as is a record with fewer than five of the figures a reader looks for.