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Description
This Barreled 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.
Barrel:
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
Upper Receiver:
Machined from a Mil-Spec 7075 T6 Forging
Black Anodized
Handguard:
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"
***Please allow an additional 2-3 business days of lead time as these uppers are made to order.***
SKU: RTBBU-459MM4A2-BLK
UPC:
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Compare prices for RTBBU-459MM4A2-BLK - RTB 4.5" 9mm Upper Receiver - BLK A2 4.5" M-LOK HG Without BCG & CH from all vendors
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