UNICORN Nitroflon Coating 6.03MM Ultimate Precision Inner Barrel (GBB) 74mm-180mm 
 
Material: Brass with Nitroflon Coating
 6.03mm Ultimate Precision Inner Barrel
AEG specifycation, included AEG 60 degree bucking, 50 degree Hop-Up Nub and brass ring
 
Inner Barrel Length Option : 
74mm: For Tokyo Marui V10
86mm: For Tokyo Marui G19、VFC G19/G19X/G45、WE G19 Series/ G19X
97mm: For Tokyo Marui G17 / HI CAPA4.3、VFC G17、WE G17
105mm: For Sig Air P320
106mm: For Tokyo Marui P320
110mm: For M92F / KJ SHADOW2
Compatible with Tokyo Marui Hop-Up Chamber, but other length will not fit for KJ Shadow2
113mm: For Tokyo Marui 1911 、HI-CAPA5.1 or all makers 1911& HI-CAPA5.1
117mm: For Tokyo Marui G34 / WE G34, M9A1 
120mm: For TP22
123mm: For Special WE 2011 Combat Master or all makers HI-CAPA5.4
129mm: For AAP-01 extention barrel or AAP CNC Hop-Up chamber For VFC MP5 / WE Apache(MP5)
138mm: For HI-CAPA5.1 / 6inch / VFC MP5PDW
150mm : For TokyoMarui MP7
162mm : For HI-CAPA7″
180mm: VFC MP7A1 For GBB
UNICORN : UC-IB-G-74 ; UC-IB-G-86 ; UC-IB-G-97 ; UC-IB-G-SW2-110 ; UC-IB-G-113 ; UC-IB-G-117 ; UC-IB-G-123 ; UC-IB-G-129 ; UC-IB-G-150 ; UC-IB-G-162 ; UC-IB-G-180; UC-IB-G-138;