Max Power 50_ joules Pistelle X-68 Barrel and Suppressor Kit. This barrel features a precision bore diameter of .686 inches and an extended length combination, offering improved shot power and accuracy thanks to its tighter bore and longer profile. Constructed from high-quality 6061 Aircraft-Grade Aluminum, it ensures durability without added weight. Barrel length option: 4.5", 6.0", 7.0", 8.0", 9.0", 11.5"Each additional length added increases the power by approximately 3–5 Joules (approximately 25–40 fps boost in velocity) Muzzle Options:Cover – Barrel muzzle thread cover for users who do not wish to install a muzzle brake or suppressor.M4 – Carbine-style muzzle brake for a classic, tactical look.Special Ops – Suppressor that recesses over 3.5" of the barrel. Optimized for use with 8" or 9"MK23 II – Suppressor that recesses over 8" of the barrel. Best suited for 11.5" barrels.Reaper – A 6" barrel extension designed to resemble a suppressor. Enhances appearance and boosts power by 10-15% (Approximately 7-12 Joules)The Reaper features a .750 bore and is engineered as a counterbore design to reduce front-end pressure, enabling smoother projectile acceleration and increased power.Shot Test Reading Report 4.5” Threaded Barrel - Shooting With 8g Projectile338 fps. 43.5j. 330 fps. 41.5j324 fps. 40j316 fps. 38j322 fps. 37 j302 fps. 34.7j298 fps 33.8j296 fps 33.3 j Shot Test Reading Report 4.5” Threaded Barrel + 6” Reaper Extension Shooting With 8g Projectile388 fps. 57.3 J 382 fps 55.6 J380 fps 55.0 J 372 fps 52.7 J 368 fps 51.5 J 364 fps 50.4 J 358 fps 48.8 J348 fps 46.1 J The barrel is compatible with 22MM muzzle threads; more muzzles and suppressors can be found here https://mcsus.com/pages/search-results-page?q=22mm%20muzzleCompatible to:Pistelle X-68 If you have a problem completing the order, you can order this item at MCS using a standard credit card https://mcsus.com/collections/defense-security VIEW OPERATIONAL VIDEO: BARREL INSTALLATION: