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Questions & Answers
Customer Reviews
Helpful Positive Review
5 Stars - DISREGARD OTHER REVIEW! by BattleBuilt, Verified Owner, March 26, 2025
I recently purchased the LWRCI ICA5 Upper Receiver from OpticsPlanet, and I couldn’t be happier with my experience. OpticsPlanet makes the process easy, and their prices, deals, and overall customer service and benefits make it a no-brainer. If you...
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1/1 found this helpful
Helpful Negative Review
Direct impingement???? by al, Verified Owner, September 28, 2024
There's a lack of vision with this upper The description says it's a direct impingement but it is not, it is a piston driven upper which is what I wanted? So i'm happy, but there's just a lot of confusion!!!
1/5 found this helpful
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Product Discontinued by Manufacturer

LWRCI AS 16 inch 5.56mm Complete Di Upper Receiver has been discontinued by LWRCI and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Receivers yourself to try and find the perfect replacement for you!

ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

Product Info for LWRCI AS 16 inch 5.56mm Complete Di Upper Receiver

Directly descended from the rifles developed by LWRCI to meet the requirements for the U.S. Army Individual Carbine program, the IC-A5 is built for high performance and continues to be listed as among the best AR rifles available. Built on the patented LWRCI patented short-stroke gas piston system offering the shooter unparalleled reliability and easy maintenance in any conditions.image

This IC-A5 Upper Receiver is a Monoforge design with integrated 12in SPR style rail base and a low profile 2 position adjustable gas block allowing the shooter to compensate for running a suppressor with the added benefit of our longer modular rail system. The upper rail section on the IC-A5 Upper Receiver is an aesthetically pleasing special cutback version which allows us to use the low profile gas block and at the same time keep the full 12in modular rails available on the sides and bottom of the hand guards. This IC-A5 brings together features of both the IC Enhanced and the IC-SPR in one package.

Constructed using the highest quality materials, machined from materials that belong to the super alloy family of steel alloys most often used in aerospace, raises the bar on reliability and ease of maintenance- delivering the highest level of performance. The gas-piston system can be accessed quickly by loosening two thumb screws.

The IC-A5 Upper ships complete with manufactured- NiCorr treated cold Hammer Forged Spiral Fluted Heavy barrel, Nickel-boron coated bolt carrier group, LWRCI Skirmish Back Up Iron Sights, Ambidextrous Charging Handle and A2 Birdcage flash hider.

Features of LWRCI AS 16 inch 5.56mm Complete Di Upper Receiver

  • Proprietary short stroke gas piston system
  • Cold hammer forged spiral fluted nicorr-treated barrel
  • Adjustable 2 position gas block
  • Birdcage (a2) flash hider
  • Skirmish back up iron sights
  • 12in user configurable rail system
  • Ambidextrous charging handle

Package Contents:

  • LWRCI AS 16 inch 5.56mm Complete Di Upper Receiver

Related Products to LWRCI AS 16 inch 5.56mm Complete Di Upper Receiver

LWRCI AS 16 inch 5.56mm Complete Di Upper Receiver Unavailable & Discontinued Models

List of Unorderable Models

  • LWRCI Complete Di Upper Receiver, AS, 5.56mm, 16 inch Barrel, 1-7 Twist, Extended M-LOK Handguard, Black, 16in, ICA5U5B16 , MPN: ICA5U5B16 , UPC: 854026005972 , Code: 1TX-UFH-IWBC6-ICA5U5B16
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