Right To Bear Complete 4.5" 9mm Upper Receiver | A2 | 4.5" M-LOK Handguard | Black | With Bolt Carrier Group and Charging HandleThis Complete 4.5 inch M-LOK upper receiver comes with a 4.5 inch free-float handguard and is built with only the best Mil-Spec components. The heart of this upper is comprised of a 4150 barrel making the action smooth and easy to keep clean.
- Length - 4.5"
- Material - 4150 Chrome Moly Vanadium
- Profile - Straight
- Finish - QPQ Corrosion Resistant
- Gas System Length - Blowback
- Twist Rate - 1:10 Twist
- Muzzle - 1/2x36 Threaded
- Weight - 8.3oz
- 9mm barrels do not have an index pin
- Colt & Glock Compatible
- USA made 8620 Steel Carrier Construction
- Phosphated or Nitrided Finish
- Heavy Firing Pin Retaining Spring
- 13.7 oz.
- Machined from a Mil-Spec 7075 T6 Forging
- Black Anodized
- MATERIAL: HARD COAT ANODIZED/CERAKOTED ALUMINUM HANDGUARD, ALUMINUM BARREL NUT
- PRECISION BORE
- ACCEPTS M-LOK RAIL SECTIONS & ACCESSORIES
- 7075-T6 BARREL NUT
- RAIL LENGTH IS MEASURED ALONG THE TOP
- INNER DIAMETER: 1.36"
- Alloy Charging Handle Assembly
- Complete with Standard Latch
- Made from hardcoat anodized aluminum
- Black finish