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rate of twist on bushmaster 90242
3 Answers

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This barrel is a 1:9" twist with 6 grooves & lands - 20" heavy profile, chrome-lined, match grade barrel.
1:9 again BUSHMSTR 90242 A2 223 TRGT 30R
Mfg Item Num: 90242
Model Number: XM-15
Purpose: Personal Protection/Sport
Series: Target
Unit of measure: GN
Action: Semi-Automatic
Caliber: 223 Remington/5.56 NATO
Barrel Length: 20
Capacity: 30+1
Trigger: Single-Stage
Safety: Lever
OAL: 39.5
Weight: 8.43 lbs
Stock Description: A2 Black
Muzzle: A2 Flash Hider
Receiver Material: Aluminum
Sights: Adjustable
Barrel Description: Chrome-Lined Match
Twist: 1:9
Barrel Length Range: 20.00 to 21.99
Weight Range: 8.00 lbs to 9.99 lbs
Hand: Right
Stock Finish Group: Synthetic
Metal Finish Group: Blued/Black
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Hi Paul, the barrel has a 1:9" twist Here are the specs for the BUSHMASTER 90242 A2 223 TRGT 30R Mfg Item Num: 90242 Model Number: XM-15 Purpose: Personal Protection/Sport Series: Target Unit of measure: GN Action: Semi-Automatic Caliber: 223 Remington/5.56 NATO Barrel Length: 20 Capacity: 30+1 Trigger: Single-Stage Safety: Lever OAL: 39.5 Weight: 8.43 lbs Stock Description: A2 Black Muzzle: A2 Flash Hider Receiver Material: Aluminum Sights: Adjustable Barrel Description: Chrome-Lined Match Twist: 1:9 Barrel Length Range: 20.00 to 21.99 Weight Range: 8.00 lbs to 9.99 lbs Hand: Right Stock Finish Group: Synthetic Metal Finish Group: Blued/BlacSTR 90242 A2 223 TRGT 30R Mfg Item Num: 90242 Model Number: XM-15 Purpose: Personal Protection/Sport Series: Target Unit of measure: GN Action: Semi-Automatic Caliber: 223 Remington/5.56 NATO Barrel Length: 20 Capacity: 30+1 Trigger: Single-Stage Safety: Lever OAL: 39.5 Weight: 8.43 lbs Stock Description: A2 Black Muzzle: A2 Flash Hider Receiver Material: Aluminum Sights: Adjustable Barrel Description: Chrome-Lined Match Twist: 1:9 Barrel Length Range: 20.00 to 21.99 Weight Range: 8.00 lbs to 9.99 lbs Hand: Right Stock Finish Group: Synthetic Metal Finish Group: Blued/Black