Lightest .177 Air (4.5mm) rifles

Rank	Firearm	Empty weight	Year
1st	e|8y)&*ez^;<^{*?<}0;|5$a^fz[0,4?*8a!/e]x6[|;!4a3Weihrauch HW30Weihrauch HW30Hermann Weihrauch Sport GmbH & Co. KGHermann Weihrauch Sport GmbH & Co. KG	2.50 kg (5.51 lb)
2nd	,$^0~-=~y2.3]63\0\52&[>*+0:0b\6327=e%(~):&?c=[b$Air Arms S200Air Arms S200Air ArmsAir Arms	2.60 kg (5.73 lb)	2002
3rd	]x<#(}b~%z&~e:$41e;+=>5}b||>@d}(#.0[~y);_)c{*~.=Diana 240 ClassicDiana 240 ClassicMayer & Grammelspacher GmbH (Diana)Mayer & Grammelspacher GmbH (Diana)	2.72 kg (6.00 lb)
4th	{\&/ab;b|[<c8:50y//f%4{2_>[8=*({3e)=c/c|.}4#5-:/Gamo WhisperGamo WhisperIndustrias El Gamo S.A.Industrias El Gamo S.A.	2.77 kg (6.10 lb)	2008
5th	9z4=#!!0;>+02{!=!8x?9dd;$7!.$+2_0f&3c70^\6|$8~-,Air Arms S500Air Arms S500Air ArmsAir Arms	2.80 kg (6.17 lb)
6th	)>;=]^4#/)@_3e[|+:{!0)+z-5f5]|71}_&9+7[3\~x<2xb\Gamo CFXGamo CFXIndustrias El Gamo S.A.Industrias El Gamo S.A.	2.99 kg (6.60 lb)	2004
7th	}_0ey+z<%f*y9e7f4+\x/!479+z93={<{e0<f,=d,<;>_8x(Gamo Whisper Fusion Mach 1Gamo Whisper Fusion Mach 1Industrias El Gamo S.A.Industrias El Gamo S.A.	3.00 kg (6.61 lb)	2013
=8th	)/~x2;,=xa#a_^/<3%!d0}<;@!&(?f%c9-7<?d=4[&-$8)c.Air Arms S400Air Arms S400Air ArmsAir Arms	3.00 kg (6.61 lb)	1998
=8th	x2/x7&[y)*6!%+|^(4/#&_}\17-/=*c*c^e_52;~05!3(y0(BSA Lightning XLBSA Lightning XLBirmingham Small Arms Company Ltd.Birmingham Small Arms Company Ltd.	3.00 kg (6.61 lb)	2007
=8th	<cy754;z74ab{8>@0;9?29,c~+(;/-/0e1%_d^1:0~;[>@{1BSA MeteorBSA MeteorBirmingham Small Arms Company Ltd.Birmingham Small Arms Company Ltd.	3.00 kg (6.61 lb)	1959
=8th	0>1||\+9|@*x&@({c9)7^(/^b>1a0e[3y\=,b1/9c53){_)xGamo Hunter 440Gamo Hunter 440Industrias El Gamo S.A.Industrias El Gamo S.A.	3.00 kg (6.61 lb)
12th	d~3~$}0e|b2\>#z}dy>.9:[.#0@e8~c;0|_)-d1#,9603a+bWeihrauch HW50Weihrauch HW50Hermann Weihrauch Sportwaffen GmbH & Co. KGHermann Weihrauch Sportwaffen GmbH & Co. KG	3.10 kg (6.83 lb)
=13th	x8]]3#,z<8>5b(;,+%4$x@|?(:2(cdb82/}}~])]0+9~9@(@BSA Gold Star SEBSA Gold Star SEBSA Guns (UK) Ltd.BSA Guns (UK) Ltd.	3.20 kg (7.05 lb)	2014
=13th	^b>0^(ex0(<?{!a[\x)16+e3>!d~.0/1)+f1_a,_~d%%x8).Diana 280 ClassicDiana 280 ClassicMayer & Grammelspacher GmbH (Diana)Mayer & Grammelspacher GmbH (Diana)	3.20 kg (7.05 lb)
=13th	.&4x<.#*a-]y!}=)~<x**>d!90^~z3404a}+yx>b2x6\^f\-Weihrauch HW57Weihrauch HW57Hermann Weihrauch Revolver- und Waffenfabrik GmbH & Co. KGHermann Weihrauch Revolver- und Waffenfabrik GmbH & Co. KG	3.20 kg (7.05 lb)
16th	/330+:b0a}e>^b$_)+^+:x=0):b6d/]#@]\7*^$?$8&!0y30Webley StingrayWebley StingrayWebley & Scott LtdWebley & Scott Ltd	3.22 kg (7.10 lb)	1988
17th	1.{!b/;/9:<a{#)b3)##9|>8%:/x\\((c5a*<>\#[c#@!7e3Weihrauch HW95Weihrauch HW95Hermann Weihrauch Sportwaffen GmbH & Co. KGHermann Weihrauch Sportwaffen GmbH & Co. KG	3.40 kg (7.50 lb)	1994
18th	ez]a|yxc<|]\,>9d?.&cz65}2*x+!#6z@_+1>@@a?!00z(8bWalther TerrusWalther TerrusCarl Walther GmbHCarl Walther GmbH	3.41 kg (7.52 lb)	2015
=19th	/&dz|-->40!3:z:&#/%.$}@y))21<{3(*.22<]/-b:1%=4f8Walther LG300Walther LG300Carl Walther GmbHCarl Walther GmbH	3.50 kg (7.72 lb)	2001
=19th	e>8z\\3a5y**2#<xxa;3_~:0?_;1_8ez\$,3:0!e_{1z3>1+Weihrauch HW85Weihrauch HW85Weihrauch & Weihrauch Sport GmbH & Co. KGWeihrauch & Weihrauch Sport GmbH & Co. KG	3.50 kg (7.72 lb)	1986
=21st	@{c:ec:2$.>|z59+z6[*9#<~*{(|e,8#_\x#47$c~.{e(09,Anschutz 8001 ClubAnschutz 8001 ClubJ.G. Anschutz GmbH & Co. KGJ.G. Anschutz GmbH & Co. KG	3.60 kg (7.94 lb)
=21st	2|d}]4y2~f4cfx}&.+@@]_~!$/.<*0|/~6/({-=01e$%!d1,Feinwerkbau 800 EvolutionFeinwerkbau 800 EvolutionFeinwerkbau Westinger & Altenburger GmbHFeinwerkbau Westinger & Altenburger GmbH	3.60 kg (7.94 lb)	2011
=21st	@0z_$#+5d$}891*99}#$[a5zb)_4<._(_cc05c9=d&2x8a9}Webley TomahawkWebley TomahawkP. Webley & SonP. Webley & Son	3.60 kg (7.94 lb)	2008
24th	\?<~f>||f;a]/|@)^#:%1{(28d:+$30e59=#=a9^-6.a;:(~Feinwerkbau SportFeinwerkbau SportFeinwerkbau Westinger & Altenburger GmbHFeinwerkbau Westinger & Altenburger GmbH	3.75 kg (8.27 lb)	2009
25th	,(?&>~\a>~>@|-)::d}^01&.(?3~3~7x^9[>__x?cd34x)b9Steyr LG110Steyr LG110Steyr Sportwaffen GmbHSteyr Sportwaffen GmbH	3.80 kg (8.38 lb)	2009

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.