Grey Ghost Precision AR-15 M-LOK Handguard

Grey Ghost Precision AR-15 M-LOK Handguard is extruded from 6061-T6 Aircraft Grade Aluminum, Type III Class 2 Hard Coat Anodized Black. Inner diameter is 1.31 in. Uses a non-proprietary barrel nut that does not require timing. Tighten the barrel nut to 65 ft-lbs. Slide the handguard over until it is flush with the upper receiver. Left and right side index tabs ensure the handguard does not twist under use. Use the two provided fastening screws to tighten the handguard around the barrel nut, with an approximate torque of 35 in-lbs. Mount Type: M-LOK with slots at 3, 6 and 9 o'clock and forward slots at 1 and 11 o'clock. Compatible with forged upper receivers and most billet upper receivers. Package contents: Grey Ghost Precision AR-15 M-LOK Handguard, Non-Proprietary Barrel Nut, Two Fastening Screws.