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Product Features:

  • CAA's NEW M4S1 M16/AR15 carbine handguard sets the standard for a stable and rigid design by combining interlocking top and bottom handguard sections with a bottom rail that can be mounted to the existing sling swivel mount for additional rigidity. M4S1 handguard will not move once locked in place providing repeatable zero
  • Lightweight polymer handguard designed to withstand the extreme operating temperatures of a gas piston system
  • Upper and lower handguard sections interlock providing the rigidity and stability you need in addition to solidly mounting to the delta ring and handguard end cap
  • Bottom rail can mount to front sling mount for additional rigidity if forward sling swivel is removed
  • Two quick detachable sling swivel mounting points
  • First lightweight polymer handguard designed for use with gas piston systems.
  • Manufactured from a special high temperature resistant polymer
  • Includes heat shields
  • Includes 4 interchangeable rails
  • Two interchangeable bottom rails 4" & 1.75" of Picatinny rail allow for operator to quickly change rails based on mission needs
  • Two 1.75" side rails allow for mounting of lights and lasers while providing a comfortable area to grip the handguard
  • Optional Long Aluminum top rail attaches to the handguard and upper receiver providing a rail that is the same height as the flat top rail
  • Minor disassembly of sling swivel optional for added rigidity
  • Eligibility for: M16/AR15
  • Material: Polymer
  • Color: Khaki
  • Size: 180 x 50 x 63 mm / 7.02 x 1.95 x 2.457 inch
  • Net Weight: 192 g / 6.77 oz / 0.423 lbs

Package Contents:

  • 1 x M4S1 Handguard
  • 5 x Screws with Caps
  • 4 x Interchangeable Rails
Available Shipping Method Tracking NO. Estimated Delivery


1) Estimated delivery time includes processing time and actual shipping time. Normally our processing will take 1-2 working days.

2) Estimated Delivery Time shown above is only for reference, since actual delivery time depends on shipping service selected, delivery schedule and local customs clearance time, especially during peak periods.

3) Shipping Costs shown include fuel surcharges and may change a bit due to the fluctuation of currency exchange rates.

4) For the order with only one item (only one item):

a. if your item is less than 20USD and need registered freight, you need to pay certain upgrading fee.
b. if your item is more than 20USD, our system will ship your item with tracking number automatically free of charge.

5) For the order with multiple items (multiple items):

a. if most items' price is more than 20USD in one order, we will send the parcel with tracking number for free.
b. if most items in one order is low value with reasonable weight and size, our Checkout process is able to identify such order giving free registered freight on it.
c. if most items in one order are low value but with relatively high weight (i.e. Value: Weight ratio is not in reasonable range), we will charge certain discounted upgrading fee if you need tracking number.

Custom Tax

A. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility.

B. Please check with your country's customs office to determine what these additional costs will be prior to buying.

Return Policy

All the cell phones you bought from come with 6-month warranty and all the items we offer have a 3-month warranty. See additional details, please refer to our Shipping & Returns or our FAQ Return Policy.

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