CMMG Rifle Length Gas Tube Kit Stainless Steel 55DA196 Bench Stone 844802226226 72054 019 2XL 5 720540192X Black 2XL barrel drilling 844802226226 72054 019 2XL 5 720540192X Black 2XL Regular Y VN 844802226233 72054 019 3XL 5 720540193X Black 3XL Regular N VN 844802226240 72054 019 4XL 5 720540194X Black 4XL Regular N VN 844802226202 72054 019 L 5 72054019L Black Large Regular Y VN 844802226196 72054 019 M 5 72054019M Black Medium Regular Y VN 844802226189 72054 019 S 5 72054019S Black Small Regular Y VN 844802226219 72054 019 XL 5 72054019XL Black XL Regular Y VN 844802344586 72054 092 2XL 5 720540922XL Storm 2XL Regular N VN 844802344593 72054 092 3XL 5 720540923XL Storm 3XL Regular N VN 844802344609 72054 092 4XL 5 720540924XL Storm 4XL Regular N VN 844802344562 72054 092 L 5 72054092L Storm Large Regular N VN 844802344555 72054 092 M 5 72054092M Storm Medium Regular N VN 844802344548 72054 092 S 5 72054092S Storm Small Regular N VN 844802344579 72054 092 XL 5 72054092XL Storm XL Regular N VN 844802320511 72054 190 2XL 5 720541902X TDU Green 2XL Regular Y VN 844802320528 72054 190 3XL 5 720541903X TDU Green 3XL Regular N VN 844802320535 72054 190 4XL 5 720541904X TDU Green 4XL Regular N VN 844802320498 72054 190 L 5 72054190L TDU Green Large Regular N VN 844802320481 72054 190 M 5 72054190M TDU Green Medium Regular N VN 844802320474 72054 190 S 5 72054190S TDU Green Small Regular Y VN 844802320504 72054 190 XL 5 72054190XL TDU Green XL Regular Y VN 844802226295 72054 724 2XL 5 720547242X Dark Navy 2XL Regular Y VN 844802226301 72054 724 3XL 5 720547243X Dark Navy 3XL Regular N VN 844802226318 72054 724 4XL 5 720547244X Dark Navy 4XL Regular N VN 844802226271 72054 724 L 5 72054724L Dark Navy Large Regular Y VN 844802226264 72054 724 M 5 72054724M Dark Navy Medium Regular Y VN 844802226257 72054 724 S 5 72054724S Dark Navy Small Regular Y VN 844802226288 72054 724 XL 5 72054724XL Dark Navy XL Regular Y VN 844802226622 72054T 019 2XL 5 72054T0192XL Black 2XL Tall N ID 844802226639 72054T 019 3XL 5 72054T0193X Black 3XL Tall N ID 844802226646 72054T 019 4XL 5 72054T0194X Black 4XL Tall N ID 844802226653 72054T 019 5XL 5 72054T0195X Black 5XL Tall N ID 844802226608 72054T 019 L 5 72054T019L Black Large Tall Y ID 844802226615 72054T 019 XL 5 72054T019XL Black XL Tall Y ID 844802344630 72054T 092 2XL 5 72054T0922XL Storm 2XL Tall N ID 844802344647 72054T 092 3XL 5 72054T0923XL Storm 3XL Tall N ID 844802344654 72054T 092 4XL 5 72054T0924XL Storm 4XL Tall N ID 844802344661 72054T 092 5XL 5 72054T0925XL Storm 5XL Tall N ID 844802344616 72054T 092 L 5 72054T092L Storm Large Tall N ID 844802344623 72054T 092 XL 5 72054T092XL Storm XL Tall N ID 844802320566 72054T 190 2XL 5 72054T1902XL TDU Green 2XL Tall Y ID 844802320573 72054T 190 3XL 5 72054T1903XL TDU Green 3XL Tall Y ID 844802320580 72054T 190 4XL 5 72054T1904XL TDU Green 4XL Tall N ID 844802320597 72054T 190 5XL 5 72054T1905XL TDU Green 5XL Tall N ID 844802320542 72054T 190 L 5 72054T190L TDU Green Large Tall Y ID 844802320559 72054T 190 XL 5 72054T190XL TDU Green XL Tall Y ID 844802226684 72054T 724 2XL 5 72054T7242XL Dark Navy 2XL Tall N ID 844802226691 72054T 724 3XL 5 72054T7243XL Dark Navy 3XL Tall N ID 844802226707 72054T 724 4XL 5 72054T7244XL Dark Navy 4XL Tall N ID 844802226714 72054T 724 5XL 5 72054T7245XL Dark Navy 5XL Tall N ID 844802226660 72054T 724 L 5 72054T724L Dark Navy Large Tall Y ID 844802226677 72054T 724 XL 5 72054T724XL Dark Navy XL Tall N ID Sizes run XS through 3XL Finish: Natural silver stainless your rifle stops cycling