AR-15 5.56/.223 Gas Port Size (Responses)
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1
What brand is the barrel?If this brand has multiple barrel lines, what line is this barrel from?What is the approximate barrel length in inches?What is the gas system?What size is the gas port in inches?What was the source of information?What date was this information sourced?If the information came from a third party, who was this third party?
2
Aero Precision10.5Carbine0.079Manufacturer6/27/2016
3
Aero Precision16Midlength0.079Manufacturer6/27/2016
4
Andro Corp Industries
10.3 with FSB, Ballistic Advantage
10.5Carbine0.070Manufacturer7/1/2017
5
AR-StonerCMV nitride10.5Carbine0.070Self-measured7/20/2017
6
Ballistic AdvantageHanson 10.310.5Carbine0.078Self-measured4/12/2016
7
Ballistic AdvantageModern Series10.5Carbine0.079Manufacturer10/1/2016
8
Ballistic AdvantageMk1810.5Carbine0.0785Manufacturer1/10/2018
9
Ballistic AdvantageModern Series14.5Midlength0.079Self-measured
10
Ballistic Advantage Hanson 14.5Midlength0.0785Manufacturer3/14/2018
11
Ballistic Advantage Hanson 16Midlength0.0785Manufacturer3/14/2018
12
Ballistic AdvantageHanson16Midlength0.073Manufacturer7/15/2018
13
Ballistic AdvantageHanson, .625 GB16Midlength0.073Manufacturer7/15/2018
14
Ballistic AdvantageModern Series, .750 GB16Midlength0.069Self-measured1/10/2016
15
Ballistic AdvantageModern Series16Midlength0.078Self-measured7/12/2018
16
Bravo Company Manufacturing11.5Carbine0.076Self-measured7/1/2009
17
Bravo Company Manufacturing11.5Carbine0.073Self-measured3/13/2017
18
Bravo Company ManufacturingCHF11.5Carbine0.075Manufacturer1/1/2017
19
Bravo Company Manufacturing14.5Midlength0.076Self-measured6/28/2016
20
Bravo Company Manufacturing16Midlength0.076Self-measured6/28/2016
21
Bravo Company ManufacturingStandard gov't profile16Midlength0.076Self-measured
22
Bravo Company ManufacturingGov't profile20Rifle0.093Self-measured8/13/2017
23
Bravo Company Manufacturing20Rifle0.092Self-measured1/10/2018
24
Bushmaster16Carbine0.0625-0.0650Manufacturer6/27/2016
25
BushmasterXM-15 MOE (Qty. of 4)16Carbine0.058Third party1/8/2013
Lucky Gunner (http://www.luckygunner.com/labs/brass-vs-steel-cased-ammo/)
26
Bushmaster16Midlength0.078-0.081Manufacturer6/27/2016
27
BushmasterHBAR20Rifle0.093Self-measured
28
CBC Industries10.5Carbine0.078125Self-measured11/8/2017
29
Centurion Arms11.5Carbine0.073Self-measured3/13/2017
30
Centurion Arms12.5Carbine0.064Manufacturer
31
Centurion ArmsCHF 14.7" Carbine14.5Carbine0.069Manufacturer7/17/2017
32
Centurion Arms16Midlength0.080Self-measured11/12/2013
33
ColtColt Commando11.5Carbine0.069Self-measured10/20/2017
34
Colt693311.5Carbine0.074Self-measured11/12/2018Used a pin gauge.
35
ColtM414.5Carbine0.062-0.063Manufacturer8/13/2004
36
ColtSOCOM14.5Carbine0.062Self-measured10/1/2016
37
ColtSOCOM14.5Carbine0.062Self-measured3/1/2016
38
ColtColt 694414.5Carbine0.062Third party4/23/2018AR15.com
39
Colt692016Carbine0.062Self-measured1/1/2015
40
Colt6920 SOCOM16Carbine0.062Self-measured1/1/2014
41
ColtHBAR20Rifle0.092Self-measured12/31/2017
42
ColtM16A120Rifle0.092-0.093Manufacturer9/28/1988
43
Criterion
CLE Recon 16.1 Ops Inc. Profile
16Midlength0.076Self-measured7/8/2018
44
CriterionHybrid 1:8 Chrome Lined20Rifle0.092Self-measured3/1/2018Pin gauge measured
45
Daniel DefenseMK18 Complete Upper10.5Carbine0.082Manufacturer
46
Daniel DefenseCHF10.5Carbine0.081Self-measured
47
Daniel DefenseMK1810.5Carbine0.076Self-measured6/6/2010
48
Daniel Defense10.5Carbine0.072Manufacturer6/1/2017
49
Daniel DefenseMK1810.5Carbine0.070Manufacturer6/15/2017
50
Daniel DefenseFactory MK1810.5Carbine0.080Self-measured10/10/2017
51
Daniel Defense11.5Carbine0.076Manufacturer6/27/2016
52
Daniel Defense12.5Carbine0.0595Third party5/28/2018Brownells
53
Daniel DefenseGovernment Profile12.5Carbine0.073Manufacturer5/1/2018
54
Daniel DefenseCHF 14.5Carbine0.067Manufacturer7/18/2017
55
Daniel DefenseM4 Gov't profile14.5Carbine0.067Self-measured1/12/2017
56
Daniel Defense14.5Carbine0.063Manufacturer
57
Daniel Defense14.5Carbine0.066Self-measured8/13/2017
58
Daniel Defense14.5Midlength0.076Manufacturer
59
Daniel DefenseLightweight CHF14.5Midlength0.076Manufacturer8/13/2017
60
Daniel Defense16Carbine0.060Manufacturer
61
Daniel DefenseS2W16Midlength0.072Self-measured8/1/2017
62
Daniel DefenseLightweight CHF16Midlength0.072Self-measured8/31/2011
63
Daniel DefenseHodge AU Mod 116Midlength0.072Self-measured10/15/2018
64
Daniel Defense16Midlength0.073Manufacturer6/27/2016
65
Fabrique Nationale HerstalCHF14.5Midlength0.077Self-measured10/9/2018
66
Faxon Firearms
10.5" Gov't / Socom, 5.56 NATO, Carbine-Length, 4150 QPQ
10.5Carbine0.081Self-measured7/5/2018
67
Faxon FirearmsFlame 5.56mm16Midlength0.081Manufacturer11/25/2016
68
Faxon FireamrsSOCOM/Govt16Midlength0.076Self-measured1/24/2018
69
Faxon FirearmsSOCOM/Govt16Midlength0.081Manufacturer4/2/2018
https://www.joeboboutfitters.com/Faxon-Firearms-16-Gov-t-Socom-5-56-Mid-Length-415-p/fax-15a58m16nsq.htm
70
Faxon FirearmsGunner16Midlength0.075Self-measured1/24/2018
71
Faxon FirearmsGUNNER18Rifle0.080Self-measured
72
Griffin ArmamentHEDP11.5Carbine0.084Self-measured8/15/2016
73
Hardened ArmsUNK10.5Carbine0.086Self-measured
74
Hardened Arms16Carbine0.088Manufacturer6/28/2016
75
Hodge Defense Systems12.5Carbine0.068Manufacturer3/13/2017
76
Hodge Defense Systems14.5Midlength0.075Self-measured10/9/2018
77
Invincible Arms16Carbine0.073Manufacturer6/30/2016
78
Invincible Arms18Midlength0.081-0.089Manufacturer6/30/2016
79
Knight's Armament KAC SR15 MOD 016Intermediate0.078Self-measured12/20/2016
80
Knight's ArmamentKAC SR15 MOD 116Intermediate0.078Self-measured3/13/2013
81
Knight's ArmamentSR-15 Match18Rifle0.081Self-measured3/13/2018
82
LaRue TacticalStealth12Carbine0.076Self-measured1/28/2018
83
LaRue TacticalStealth16Midlength0.078Self-measured2/3/2018
84
Lewis Machine and Tool10.5Carbine0.073Manufacturer6/28/2016
85
Lewis Machine and Tool10.5Carbine0.073Self-measured5/9/2017
86
Lewis Machine and Tool16Carbine0.062Manufacturer6/28/2016
87
Midwest Industries16Midlength0.081Manufacturer6/27/2016
88
NoveskeSwitchblock S setting10.5Carbine0.063Self-measured8/13/2017
89
NoveskeCHF10.5Carbine0.071Third partyRobb Jensen
90
NoveskeLo-Pro10.5Carbine0.081Self-measured5/1/2011
91
NoveskeCHF Chrome Lined Lo-Pro12.5Carbine0.073Self-measured1/1/2014
92
NoveskeN412.5Carbine0.071Self-measured3/13/2017
93
NoveskeInfidel 13.713.7Midlength0.087Self-measured2/28/2018
94
NoveskeAfghan14.5Midlength0.076Self-measured5/25/2009
95
NoveskeN414.5Midlength0.081Self-measured9/1/2013Pin Guage Measured
96
NoveskeAfghan Stainless14.5Midlength0.081-0.082"Third party2/19/2018Next Gen Arms
97
NoveskeN414.5Midlength0.082Self-measured8/1/2018
98
Noveske
LO-PRO GAS BLOCK BARREL, 556
16Midlength0.081Self-measured3/9/2017
99
NoveskeN416Midlength0.083Self-measured8/1/2018
100
Palmetto State ArmoryUnknown8.5Pistol0.063Self-measured3/10/2018
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