AIM Sports Inc Keymod Handguard for H&K 91 Rifle Length Black Medium Black Medium. These AR Handguards & Rail Covers by AIM Sports Inc feature a proprietary mounting system which requires no alterations or fitting. This AIM Sports Inc KeyMod Free Float Handguard is durable yet lightweight and is sure to keep you moving forward. If you're looking for a versatile and sleek forend for your AR look no further than the AIM Sports Inc KeyMod Handguard. Specifications for AIM Sports Inc Keymod Handguard: Manufacturer: AIM Sports Inc Gun Make: Heckler & Koch Gun Model: Heckler & Koch HK91 Handguard Length: 12 in Color: Black Finish: Anodized Gun Rail: KeyMod Gas System Type: Long-Stroke Piston Weight: 6.9 oz Condition: New Included Accessories: Standard Additional Features: Five Rows of Mounting Surface Mount Type: KeyMod Fabric/Material: 6061-T6 Aluminum Gun Type: Rifle Quantity: 1 Features of AIM Sports Inc Keymod Handguard 6061 T6 aluminum 5 KeyMod rows Package Contents: AIM Sports Inc Keymod Handguard What firearm models does the manufacturer say AIM Sports Inc Keymod Handguard is compatible with? The manufacturer says that AIM Sports Inc Keymod Handguard is compatible with Heckler & Koch HK91AIM Sports Inc MKH91R: Keymod Handguard for H&K 91 Rifle Length Black Medium MKH91R Black Medium