Shop now and get Free Value Shipping on most orders over $49 to the
contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.
Enjoy our FREE RETURNS
We want to ensure that making a return is as easy and hassle-free as possible! If for any
reason you are not satisfied with your purchase, simply return the item within 30 days of
receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.
Please Enable Your Browser's Cookies Functionality
Cookies are not currently enabled in your browser, and due to this the functionality of our site will be severely restricted.
Web browser based cookies allow us to customize our site for you, save items in your cart,
and provide you with a great experience when shopping OpticsPlanet.
Your privacy is important to us, and any personal information you supply to us is kept strictly confidential.
If you cannot enable cookies in your browser, please contact us — we are always here to help!
JavaScript is blocked by AdBlocker or ScriptBlocker
We're sorry - it looks like some elements of OpticsPlanet are being disabled by your AdBlocker.
Unfortunately we are unable to offer our excellent shopping experience without JavaScript.
Please add "opticsplanet.com" and "https://opl.0ps.us/assets-c7d94cc0d96/" to whitelist,
or disable AdBlocker for this site (please note that we do NOT feature any annoying ads on this website).
Thanks!
Your Browser is Outdated
Unfortunately, we are unable to provide an excellent shopping experience on your browser because it lacks modern functionality needed for us
to provide a fast, secure, and enjoyable experience. If you cannot upgrade your browser or use an alternative device to visit us,
please contact us at +1-800-504-5897 and we'll be happy to assist you over the phone!
Spikes Tactical M4 Flat Top Upper Color: Black, Finish: Anodized, 10% Off w/ Free Shipping
Special offer available for this product! Chat with us and mention RAD
*Clearance and Blazin' Deal models do not qualify
Limited Time Offer. Click here to see!
Limited Time Offer! Order Now
You've been selected to receive a special discount on this product. Use the applicable coupon code at checkout to claim your offer.
These savings won't last, so don't delay! Limited time only. Cannot be combined with other promotions or offers.
Spikes Tactical Upper Receiver - Forged M4 Flat Top Multi Cal, SFT50M4
Spikes Tactical Upper Receiver - Forged M4 Flat Top Multi Cal SPKSFT50M4
Spikes Tactical Upper Receiver - Forged M4 Flat Top Multi Cal SPKSFT50M4
Spikes Tactical Upper Receiver - Forged M4 Flat Top Multi Cal SPKSFT50M4
Spikes Tactical M4 Flat Top Upper, SFT50M4
Spikes Tactical M4 Flat Top Upper, SFT50M4
Spikes Tactical M4 Flat Top Upper, SFT50M4
Spikes Tactical M4 Flat Top Upper, SFT50M4
Spikes Tactical M4 Flat Top Upper, SFT50M4
Spikes Tactical M4 Flat Top Upper, SFT50M4
1 of 10 images
Spikes Tactical Upper Receiver - Forged M4 Flat Top Multi Cal, SFT50M4
2 of 10 images
Spikes Tactical Upper Receiver - Forged M4 Flat Top Multi Cal SPKSFT50M4
3 of 10 images
Spikes Tactical Upper Receiver - Forged M4 Flat Top Multi Cal SPKSFT50M4
4 of 10 images
Spikes Tactical Upper Receiver - Forged M4 Flat Top Multi Cal SPKSFT50M4
Yes. The upper receiver does not determine the exact caliber, that is determined by the internals/barrel. As long as this is built out for a 5.56 NATO or .223 Wylde, it will shoot .223 Remington with no problems.
Spikes makes great parts and I run some of these upper receivers and they have been flawless. Fit and finish is great and the tolerances are good and tight. The packaging leaves a lot to be desired compared to Aero or BCM but that’s really my only gr...
Read More...
This is very nicely machined and anodized, but it fits a little bit loose with my spikes lower. Not a big deal, may cerakote it and that might help, but I figured matching a Spikes upper and lower would have been a little more snug.
Works great, but they packaging was questionable. It was in its bag and then into a postage bag so I had some dents and dings on the upper. I wish I could have done the damage but it is what it is. A little bubble wrap could have prevented it. Otherw...
Read More...
I bought two, and man they are nice! Very nice for and finish. I think Spike's is overlooked anymore in the industry because there are so many players, but they got really big for a reason. That make really nice stuff and i highly recommend. I had a ...
Read More...
I love ordering from O.P! They have great products, fast shipping, and fair prices! The Spikes Tactical M4 Flat Top Upper was bought to go with a Spikes Tactical Crusader Stripped Lower I already had. The upper looks okay. It does have a small blemis...
Read More...
I have become a fan of the Spikes uppers and lowers - they are a solid foundation to build on and have been consistently good, unlike some brands that show up out of spec and needed some work. The quality hits the mark at a good price = value.
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.
Made in USA
Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.
Product Info for Spikes Tactical M4 Flat Top Upper
The Spikes Tactical M4 Picatinny Upper is designed to be a superior replacement or upgrade upper for your M4 rifle. Built with the same high quality that is used on factory builds, these AR15 Upper Receivers by Spikes Tactical are constructed from 7075 T6 aluminum and feature a forward assist as well as an ejection port door, making installation easy. Make sure your rifle is operating at peak efficiency, install the Spikes Tactical M4 Aluminum Flat Upper.
Specifications for Spikes Tactical M4 Flat Top Upper:
Manufacturer:
Spikes Tactical
Color:
Black
Finish:
Anodized
Fabric/Material:
7075 T6 Construction
Caliber:
5.56x45mm NATO
Gun Model:
M4
Additional Features:
Forged M4 Flat Top Multi Cal
Condition:
New
Country of Origin:
USA
Features of Spikes Tactical M4 Picatinny Upper:
Machined from a Mil-Spec 7075 T6 forging
Type III Hardcoat Anodized finish
Ejection port door cover and forward assist come pre-installed
Chambered in 5.56x45mm NATO
Package Contents:
Spikes Tactical M4 Flat Top Upper
Spikes Tactical M4 Flat Top Upper Orderable Models
Your Browser is Outdated
Made in USA
