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GM-M51 M4 Barrel Assembly

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Product Description

For a Limited Time, the NEW GM-M51!

A 16” M4 barrel, 5.56 caliber with a 1:7 RH Twist. It’s already assembled with an A2 Front sight Base, Post, Detent, and Spring, a Handguard cap, and Barrel Nut. The GM-M51 sports a Carbine Gas length, M4 Feed ramps, Chrome lined bore and Phosphate exterior coating, and of course, All the Quality and Performance you expect from GMRB. Quantities are limited.

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