This is a Magpul Industries Handguard known as the Zhukov, model MAG586-PLM.
The Magpul Zhukov Hand Guard is a fully-featured AK forearm for the modern AK. The Zhukov Hand Guard casts aside traditional AK forearm shortcomings and offers an extended option for modern shooting techniques" an aluminum chassis for strength and heat dispersion" a comfortable injection molded exterior for superior ergonomics" and M-LOK(R) slots for optimized accessory attachment. Compatible with the Ultimak gas tube rail for optics mounting" the Zhukov Hand Guard redefines functionality for the modern AK platform. Installation requires permanent removal of the hand guard retainer. Made in U.S.A. Hand Guard counts as one US compliance part for 922(r).
Features:
Extended length provides large gripping surface
Full length, hard anodized, aluminum chassis
Durable polymer outer cover
Excellent heat shielding