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 AdvantageModern Series, .750 GB16Midlength0.069Self-measured1/10/2016
11
Bravo Company Manufacturing11.5Carbine0.076Self-measured7/1/2009
12
Bravo Company Manufacturing11.5Carbine0.073Self-measured3/13/2017
13
Bravo Company ManufacturingCHF11.5Carbine0.075Manufacturer1/1/2017
14
Bravo Company Manufacturing14.5Midlength0.076Self-measured6/28/2016
15
Bravo Company Manufacturing16Midlength0.076Self-measured6/28/2016
16
Bravo Company ManufacturingStandard gov't profile16Midlength0.076Self-measured
17
Bravo Company ManufacturingGov't profile20Rifle0.093Self-measured8/13/2017
18
Bravo Company Manufacturing20Rifle0.092Self-measured1/10/2018
19
Bushmaster16Carbine0.0625-0.0650Manufacturer6/27/2016
20
BushmasterXM-15 MOE (Qty. of 4)16Carbine0.058Third party1/8/2013
Lucky Gunner (http://www.luckygunner.com/labs/brass-vs-steel-cased-ammo/)
21
Bushmaster16Midlength0.078-0.081Manufacturer6/27/2016
22
BushmasterHBAR20Rifle0.925Self-measured
23
CBC Industries10.5Carbine0.078125Self-measured11/8/2017
24
Centurion Arms11.5Carbine0.073Self-measured3/13/2017
25
Centurion Arms12.5Carbine0.064Manufacturer
26
Centurion ArmsCHF 14.7" Carbine14.5Carbine0.069Manufacturer7/17/2017
27
Centurion Arms16Midlength0.080Self-measured11/12/2013
28
ColtColt Commando11.5Carbine0.069Self-measured10/20/2017
29
ColtM414.5Carbine0.062-0.063Manufacturer8/13/2004
30
ColtSOCOM14.5Carbine0.062Self-measured10/1/2016
31
ColtSOCOM14.5Carbine0.062Self-measured3/1/2016
32
Colt692016Carbine0.062Self-measured1/1/2015
33
Colt6920 SOCOM16Carbine0.062Self-measured1/1/2014
34
ColtHBAR20Rifle0.092Self-measured12/31/2017
35
ColtM16A120Rifle0.092-0.093Manufacturer9/28/1988
36
CriterionHybrid 1:8 Chrome Lined20Rifle0.092Self-measured3/1/2018Pin gauge measured
37
Daniel DefenseMK18 Complete Upper10.5Carbine0.082Manufacturer
38
Daniel DefenseCHF10.5Carbine0.081Self-measured
39
Daniel DefenseMK1810.5Carbine0.076Self-measured6/6/2010
40
Daniel Defense10.5Carbine0.072Manufacturer6/1/2017
41
Daniel DefenseFactory MK1810.5Carbine0.080Self-measured10/10/2017
42
Daniel Defense11.5Carbine0.076Manufacturer6/27/2016
43
Daniel DefenseCHF 14.5Carbine0.067Manufacturer7/18/2017
44
Daniel DefenseM4 Gov't profile14.5Carbine0.067Self-measured1/12/2017
45
Daniel Defense14.5Carbine0.063Manufacturer
46
Daniel Defense14.5Carbine0.066Self-measured8/13/2017
47
Daniel Defense14.5Midlength0.076Manufacturer
48
Daniel DefenseLightweight CHF14.5Midlength0.076Manufacturer8/13/2017
49
Daniel Defense16Carbine0.060Manufacturer
50
Daniel DefenseS2W16Midlength0.072Self-measured8/1/2017
51
Daniel DefenseLightweight CHF16Midlength0.072Self-measured8/31/2011
52
Daniel Defense16Midlength0.073Manufacturer6/27/2016
53
Faxon FirearmsFlame 5.56mm16Midlength0.081Manufacturer11/25/2016
54
Faxon FireamrsSOCOM/Govt16Midlength0.076Self-measured1/24/2018
55
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
56
Faxon FirearmsGunner16Midlength0.075Self-measured1/24/2018
57
Faxon FirearmsGUNNER18Rifle0.080Self-measured
58
Griffin ArmamentHEDP11.5Carbine0.084Self-measured8/15/2016
59
Hardened ArmsUNK10.5Carbine0.086Self-measured
60
Hardened Arms16Carbine0.088Manufacturer6/28/2016
61
Hodge Defense Systems12.5Carbine0.068Manufacturer3/13/2017
62
Invincible Arms16Carbine0.073Manufacturer6/30/2016
63
Invincible Arms18Midlength0.081-0.089Manufacturer6/30/2016
64
Knight's Armament KAC SR15 MOD 016Intermediate0.078Self-measured12/20/2016
65
Knight's ArmamentKAC SR15 MOD 116Intermediate0.078Self-measured3/13/2013
66
Knight's ArmamentSR-15 Match18Rifle0.081Self-measured3/13/2018
67
LaRue TacticalStealth12Carbine0.076Self-measured1/28/2018
68
LaRue TacticalStealth16Midlength0.078Self-measured2/3/2018
69
Lewis Machine and Tool10.5Carbine0.073Manufacturer6/28/2016
70
Lewis Machine and Tool10.5Carbine0.073Self-measured5/9/2017
71
Lewis Machine and Tool16Carbine0.062Manufacturer6/28/2016
72
Midwest Industries16Midlength0.081Manufacturer6/27/2016
73
NoveskeSwitchblock S setting10.5Carbine0.063Self-measured8/13/2017
74
NoveskeCHF10.5Carbine0.071Third partyRobb Jensen
75
NoveskeLo-Pro10.5Carbine0.081Self-measured5/1/2011
76
NoveskeCHF Chrome Lined Lo-Pro12.5Carbine0.073Self-measured1/1/2014
77
NoveskeN412.5Carbine0.071Self-measured3/13/2017
78
NoveskeInfidel 13.713.7Midlength0.087Self-measured2/28/2018
79
NoveskeN414.5Midlength0.081Self-measured9/1/2013Pin Guage Measured
80
NoveskeAfghan Stainless14.5Midlength0.081-0.082"Third party2/19/2018Next Gen Arms
81
Noveske
LO-PRO GAS BLOCK BARREL, 556
16Midlength0.081Self-measured3/9/2017
82
Palmetto State ArmoryUnknown8.5Pistol0.063Self-measured3/10/2018
83
Palmetto State ArmoryCHF10.5Carbine0.079Self-measured
84
Palmetto State ArmoryR marked M4 contour 16Carbine0.073Self-measured
85
Palmetto State ArmoryPremium CHF16Carbine0.073Self-measured
86
Palmetto State ArmoryFN CHF16Midlength0.078Self-measured10/23/2016
87
Palmetto State ArmoryFreedom Nitride16Midlength0.076Self-measured2/16/2017
88
Palmetto State ArmoryStainless Freedom16Midlength0.078Self-measured5/1/2014
89
Palmetto State ArmoryStainless Freedom16Midlength0.081Self-measured8/15/2016
90
Palmetto State Armory18Rifle0.086Self-measured3/13/2017
91
Palmetto State Armory
CHF Gov Profile, Phopsphate 1/7
20Rifle0.091Self-measured6/5/2015
92
Patriot Rifleworks Warrior16Midlength0.076Manufacturer1/18/2018
93
Primary Weapons Systems16Midlength0.082Manufacturer7/1/2017
94
Rainier ArmsMountain series CHF, FN14.5Carbine0.069Self-measured
95
Rock River Arms16Carbine0.080Manufacturer6/28/2016
96
Rock River ArmsHeavy Chrome-Lined16Midlength0.083Self-measured1/1/2009
97
Rock River Arms16Midlength0.080Manufacturer6/28/2016
98
Sionics Weapon SystemsRGP11.5Carbine0.071Self-measured
99
Sionics Weapon Systems11.5" Patrol RGP11.5Carbine0.070Self-measured
100
Sionics Weapon Systems16Midlength0.076Manufacturer6/28/2016
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