Hi Zachary, It comes with 1:7 Twist Rate through a 22 Stainless Steel Bull Barrel. Quality is top notch on these. CMMG MK4 T is a high quality Semi-Auto Rifle accessorized to provide optimum performance for a wide range of shooting situations. The MK4 T utilizes a 16 medium tapered 4140 steel barrel hardened inside and out with a salt bath nitride finish. A 1:7 twist stabilizes heavy match grade and military bullets for long-range shooting. A Picatinny rail on top the upper receiver extends the full length of the handguard allowing the attachment of aftermarket optical sights. The 14 aluminum handguard features CMMG's Keymod attachment system at 3 6 and 9 o'clock for attaching lights laser sights vertical grips sling swivels and other tactical accessories. A 6-position collapsible stock adjusts for the perfect length of pull regardless of clothing or tactical gear worn by user. The MK4 T has a single stage trigger for enhanced reliability and HD receiver pins make the rifle easy to field strip. The CMMG MK4 T Semi-Auto Rifle has finish that blends in well to most any environment and holds up to adverse conditions. Fire for Effect M109 22 Stainless Steel Bull Barrel. - Action: Semi-Automatic - Caliber: 5.56mm - Barrel Length: 22 - Material: Steel/Aluminum - Twist: 1:7

Its a 1:7 CMMG MK4 T is a high quality Semi-Auto Rifle accessorized to provide optimum performance for a wide range of shooting situations. The MK4 T utilizes a 16 medium tapered 4140 steel barrel hardened inside and out with a salt bath nitride finish. A 1:7 twist stabilizes heavy match grade and military bullets for long-range shooting. A Picatinny rail on top the upper receiver extends the full length of the handguard allowing the attachment of aftermarket optical sights. The 14 aluminum handguard features CMMG's Keymod attachment system at 3 6 and 9 o'clock for attaching lights laser sights vertical grips sling swivels and other tactical accessories. A 6-position collapsible stock adjusts for the perfect length of pull regardless of clothing or tactical gear worn by user. The MK4 T has a single stage trigger for enhanced reliability and HD receiver pins make the rifle easy to field strip. The CMMG MK4 T Semi-Auto Rifle has finish that blends in well to most any environment and holds up to adverse conditions. Fire for Effect M109 22 Stainless Steel Bull Barrel. - Action: Semi-Automatic - Caliber: 5.56mm - Barrel Length: 22 - Material: Steel/Aluminum - Twist: 1:7
UPC: 815835017716

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Correction : This rifle has a 1:7 Twist Rate Zachary. It is manufactured by a subsidiary of CMMG which is a good to go Major player the AR-15/10 Market. Fire For Effect M109 22 Stainless Steel Bull Barrel. – Action: Semi-automatic – Caliber: 5.56mm – Barrel Length: 22 – Material: Steel – Twist: 1:7 -- This is from a the AR15.com forum regarding FFE : (CMMG has some serious stake in FFE... they havent said it, but I believe they are atleast partially owned by CMMG. All parts in the upper its self that matter are CMMG, the only difference is that CMMG isnt stamping the barrells for them with the classic CMMG markings (meaning they are showing the chambers and etc) I spoke with the guys from CMMG and from FFE this weekend at a fun show and they assured me that this was the case. If you notice at each show they set up right next to each other. Now with that said, I own TWO FFE rifle kits and an FFE pistol kit. I am EXTREMELY pleased. Sets up nice, and shoots even better. It is CMMG quality, at a slightly less price). So the majority of the parts are manufactured by CMMG and are high quality.