UTG MTU039SSM MR556 15″ SUPER SLIM HNDGR

The HK Slim Line Gas Block is compatible with the UTG PRO M-LOK® H&K MR556 15″ Super Slim Free Float Handguard Rail forend (MR556 Uppers). With its 36 slot Picatinny top rail, the Super Lightweight handguard fits flush and seamlessly with your flat top MR556 upper receiver. Mounting M-LOK® Rails and Direct Accessories is made possible by the 56 M-LOK® Slots on 7 Tracks of the UTG Pro H&K MR556 Free Float Handguard. hand defender includes an 8-Slot Picatinny Rail Section, a QD Sling Swivel Adaptor, and two M-LOK® Accessories. For a secure installation, the handguard uses the existing barrel nut and features an integrated anti-rotation tab as well as precision-cut barrel nut shimms. With its grooved surface and ergonomic octagonal profile, your rifle will have a sturdy and comfortable grip.