 | SDJA86 | 6.01mm X 590mm/23.23in length, Tight bore inner barrel for M4 & AK | $54.00 |
 | SDJA60 | JBU 6.01mm x 229mm, 9.01inch tight bore inner barrel | $54.00 |
 | SDJA68 | JBU 6.01mm x 500mm, 19.68inch tight bore inner barrel | $54.00 |
 | SDJA85 | 6.03mm X 650mm/25.59in length, Tight bore inner barrel for M16+ & AK+ | $54.00 |
 | SDJA61 | JBU 6.01mm x 509mm, 20.04inch tight bore inner barrel | $54.00 |
 | SDJA84 | 6.03mm X 590mm/23.23in length, Tight bore inner barrel for MIL16 | $54.00 |
 | SDJA62 | JBU 6.01mm x 247mm, 9.72inch tight bore inner barrel | $54.00 |
 | SDJA41 | JBU M120 Upgrade/Tune Up Kit for M4 | $75.00 |
 | SDJA42 | JBU M120 Upgrade/Tune Up Kit for M16 AEG | $75.00 |
 | SDJA43 | JBU M120 Upgrade/Tune Up Kit for AK-Beta AEG | $75.00 |
 | SDJA44 | JBU M120 Upgrade/Tune Up Kit for AK47 & 74 AEG | $75.00 |
 | SDJA17 | JBU M4 CQB Reinforced, Adjustable Length Outer Barrel Set | $85.00 |
