KAC SR-25 14.5″ MLOK Upper Now Available

Richard L.
by Richard L.
Source: https://www.knightarmco.com/14711/shop/rifle-partsaccessories/sr-25-upper-receiver-kit-cc-14-5-m-lok

KAC Instagram Announcement

June 1, 2018, Knight’s Armament Company (KAC) posted on their Instagram that their new SR-25 upper was finally available and in the wild! The Knight’s Armament SR-25 Compact Carbine (CC) M-LOK URX 4 Upper Receiver with a 14.5″ Barrel (P/N:111468) is a new release for 2018 and is finally available to the commercial market. The KAC SR-25 14.5″ M-LOK upper is the latest iteration of the renowned SR-25.

Included With the Upper

This upper contains a lightweight 14.5″ barrel with a pinned 3-Prong QDC flash suppressor. This allows for the shortest overall length while still reaching the 16″ permanent length necessary to avoid the short barrel rifle (SBR) process and tax stamp.

Above we see the Knight's Armament SR-25 Compact Carbine (CC) M-LOK URX 4 Upper Receiver with a 14.5 Barrel. Source: https://www.knightarmco.com/14711/shop/rifle-partsaccessories/sr-25-upper-receiver-kit-cc-14-5-m-lok

The barrel is a 14.5″ (36.83 cm) lightweight contour with a 5R cut rifling and a 1:10 right-hand twist. This 7.62 NATO/ .308 WIN upper weighs in at 5.6 lbs. (2.54 Kg) and comes in at an overall length (OAL) of 25.5″. In standard configuration, the upper comes with a 13.5” URX4 M-Lok hand guard. Also included with the upper are the following:

  • A pinned 3 prong QDC flash suppressor
  • Knight’s Micro front sight
  • Knight’s Micro 600m rear sight
  • Knight’s SR-25 buffer
  • Knight’s SR-25 action spring
  • Magpul M-LOK rail cover kit


This upper assembly can be purchased from Weapon Outfitters and is an ideal upper for a general purpose rifle. Knight’s Armament Company is well known for their direct impingement system SR-25 series. The new 14.5″ M-LOK upper will have an MSRP of $3,500. While the last time I checked Weapon Outfitters was still out of stock, it is good to see that the latest iteration of the SR-25 upper has finally hit the commercial market.

Richard L.
Richard L.

Richard lives in southern Indiana and has a strong interest in training, modified pistols, optics, and low profile gear/tactics. Some may consider it hoarding or some form of addiction, but he never tires in his pursuits as a stamp and lumen collector!For any corrections, input, or interest in posts, you can reach him at rlidelldsg@gmail.com.

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10 of 19 comments
  • Andy1077 Andy1077 on Jun 05, 2018

    I wish companies wouldn't pin and weld muzzle brakes on 14.5" uppers from the factories and just let the customer do it. More of a hassle to remove and put the muzzle brake that you actually want on.

    • See 7 previous
    • Iksnilol Iksnilol on Jun 07, 2018

      @spike1984 I agree.

  • Rusty Taliaferro Rusty Taliaferro on Jun 05, 2018

    the upper isnt pinned fyi