$20 Off Your $100 Purchase! Including Firearms! Use Code: SPRING20

Core Systems Core 15 M4 Piston Centerfire Rifle

Item # 754881
Sold Out
Additional Information:

Prices, promotions, styles and availability may vary by store and online.

  • To buy online and deliver to a Gander Mountain store or an Independent Firearms Dealer, simply add this item to your cart. Click here for additional details.
  • Firearms shipping charge of $25.00 per item.
  • You must be at least 18 years old to purchase this item. State and local laws may vary.


  • Adjustable Gas Settings

  • 16" M4 Profile Match-Grade Barrel

  • Carbon 15 Six-Position Stock

  • Beveled Magwell & M4 Feed Ramps

  • V.2 Hardcore Billet Charging Handle

Product Summary

By exceeding military standards, Core Systems ensures the best fit possible and can offer a more reliable, smoother functioning, and more accurate weapon that will provide you with the peace of mind that you deserve. The Core 15 M4 Piston has a gas piston assembly with adjustable gas settings and a proprietary monolithic, melonite-coated bolt carrier that ensures unquestionable performance in any environment. The 16" M4 profile stainless steel match-grade barrel has a 1 in 8" twist and an A2 flash hider. The upper and lower receivers are constructed from Mil-Spec Forged 7075-T6 aluminum and the stock is a Core 15 six-position retractable model with an A2 pistol grip. The lower receiver has a beveled magwell for improved reloading speed, machined chevrons in the front strap, and bullet pictogram safety markings. The upper receiver has M4 feed ramps and a 1913 Picatinny flattop rail with a railed gas block up front for sight mounting. A Core 15 V.2 Hardcore Billet charging handle; M4-style Thermoset molded polymer hand guards with DualHeat Shields; and a monolithic, Melonite-coated bolt carrier ensure that your M4 Piston will operate safely and smoothly for years to come. A 30-round Magpul PMAG is included.

Model Core 15 M4 Piston
Type Centerfire Rifle
Action Semi-Auto
Caliber .223 Rem./5.56 NATO
Barrel Length 16"
Weight 6 Lbs. 7 oz.
Sights Picatinny Mounting Rail
Finish: Stock Matte Black Synthetic
Finish : Barrel & Receiver Matte Blued
Safety 2-Position Thumb
Capacity 30 + 1