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Yankee Hill Specter Four Rail AR15 Free Float Kits YHM-9638-Kit [YHM-9638-KIT]  $304.95  $232.95 

Yankee Hill Specter Four Rail AR15 Free Float Kits YHM-9638-Kit






Specter Four Rail Free Float Kits YHM-9638 Kit M4 Carbine

This kit allows you to mount optics, grips, flashlights, etc to the forearm's picatinny rails. These Specter Kits give you a streamlined look from standard M4 Carbines or AR15 Rifles by concealing the gas block under the forearm tube. We provide a flip front backup Iron sight (BUIS) to mount right on your forearm. This gives your rifle a unique profile while providing more rail surface and an increased sight radius. This kit provides all parts necessary for operation on your upper receiver. Designed to free float the barrel even with our End Cap installed. The Specter Forearm has an overall length of 9.675 Inches, and is designed to be assembled on a carbine top end.  As another option, create a Specter XL with an overall length of 12.50 Inches with the YHM-9840 sold separately. Each Specter kit includes: YHM-9638 Lightweight Forearm, End Cap (YHM-9484), Forearm Flip Front Sight (YHM-9627), Specter Gas Block (YHM-9378), Swivel Stud (YHM-9469), 1-1/4" Q.D. Sling Swivel (YHM-9470). This IS the finest U.S.A. made Military/LEO/SWAT product from Yankee Hill Manufacturing (YHM). MIL-I_45208 Government Certified tactical products.


Four Rail Free Float Forearms
*New and Improved* Now utilizing anti-rotation screws to insure that the forearm stays solid even under strenuous use. With the addition of the anti-rotation screws our forearms are now even better suited for forward grips and optics. Features include: mounting points for our Swiveling Sling Studs (YHM-9469), Mil. Spec. Picatinny rails. The barrel nut and forearm tube are made of aircraft quality aluminum and hardcoat anodized to Mil. Specs. The jam nut is made from quality steel and phosphate coated. All assemblies include: one jam nut, one barrel nut, and one forearm tube.


  • Authorized Yankee Hill Distributor
  • MIL-I_45208 Government Certified tactical products.
  • Front Flip Back Up Iron Sight (with Locking Detent) Included
  • All Steel USA MADE quality parts for .750 Standard Barrel.
  • Parts also available in-stock for .625 Standard Barrel.
  • Lightweight Free Float Railed Specter Forearm
  • Rails are Same Plane as Flat Top Receiver
Upgrades available to new Diamond YHM-9637-DX Forearm, Rifle 12.5 inch YHM-9480 "Solid" Style, Rifle LW 12.5 inch YHM-9636, and MCTAR-LPG gas block.

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FAB GL-MAG AR15 Survival Buttstock w/Built–in Magazine Carrier
FAB GL-MAG AR15 Survival Buttstock w/Built–in Magazine Carrier
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