M4A4 | Mainframe (Field-Tested)
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424 offers
FT
0.164618492126460
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.163663655519490
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.167582333087920
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.165664315223690
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.169917374849320
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.265310525894170
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.202820211648940
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.205551102757450
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.215261355042460
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.172694951295850
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.183302819728850
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.215751096606250
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.214973837137220
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.185689017176630
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.202061727643010
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.198802068829540
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.330413639545440
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.204838141798970
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.201656624674800
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.161942541599270
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.164881870150570
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.206724449992180
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.198805049061780
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.196088463068010
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.214852243661880
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.195437058806420
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.377338677644730
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.201435104012490
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.204835519194600
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.215541616082190
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.360491394996640
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.182664349675180
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.164637088775630
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.202156096696850
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.170950829982760
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.19
FT
0.153831541538240
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.20
FT
0.204285621643070
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.20
FT
0.220982640981670
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.20
FT
0.159028008580210
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.20
FT
0.213857546448710
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.22
FT
0.195841580629350
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.22
FT
0.156974941492080
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.22
FT
0.160946965217590
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.22
FT
0.178926646709440
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.24
FT
0.160664394497870
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.24
FT
0.220356866717340
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.27
FT
0.244759887456890
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.27
FT
0.170308113098140
100%
karrigan (Glitter, Champion) | Antwerp 2022
100%
karrigan (Glitter, Champion) | Antwerp 2022
100%
karrigan (Glitter, Champion) | Antwerp 2022
100%
karrigan (Glitter, Champion) | Antwerp 2022
![karrigan (Glitter, Champion) | Antwerp 2022]()
karrigan (Glitter, Champion) | Antwerp 2022
100%
$0.05
![karrigan (Glitter, Champion) | Antwerp 2022]()
karrigan (Glitter, Champion) | Antwerp 2022
100%
$0.05
![karrigan (Glitter, Champion) | Antwerp 2022]()
karrigan (Glitter, Champion) | Antwerp 2022
100%
$0.05
![karrigan (Glitter, Champion) | Antwerp 2022]()
karrigan (Glitter, Champion) | Antwerp 2022
100%
$0.05
Total: $0.20
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.27
FT
0.307714313268660
Up to 12H Delivery may take up to 12 hours. You can cancel if the seller doesn't create the trade within 30 minutes.
$0.27
FT
0.202237367630000
Instant Your purchase will be delivered instantly.
$0.28
M4A4 | Mainframe (Field-Tested)
The M4A4 | Mainframe (Field-Tested, FT) is an Industrial Grade rifle skin built around a CPU theme — a black circuit-board body wired with connectors and electrical contacts, accented in bright green and blue. Field-Tested is the most common and affordable way to run it, wearing a touch of honest use on a base that shrugs most of it off.
Design
The look is pure hardware: a black board studded with connectors and contact points, and green-blue accents tracing what read as live signal paths. Valve designed the finish in-house, and it comes with a tidy one-liner — "At the heart of it all" — that plays right into the mainframe concept. It's a technical, understated skin rather than a flashy one.
M4A4 | Mainframe (Field-Tested) Float and Wear
The finish caps at 0.50, and Field-Tested occupies the broad middle of that scale. Here you'll see light scratching on the edges and high spots, but the dark circuit-board base disguises it so well that most copies still read tidy at arm's length, and the green-blue accents hold up regardless. This is the grade most players end up with, and it looks the part in-game.
M4A4 | Mainframe Rarity
Rarity: Industrial Grade — the light-blue tier. It ranks second from the bottom of the standard weapon grades, one rung over Consumer and under Mil-Spec, which makes it one of the more common things you'll pull and keeps the skin cheap to own.
M4A4 | Mainframe Case and Collection
Field-Tested copies, like every grade here, come from The 2018 Nuke Collection, launched with the FACEIT 2018 update in September 2018. No weapon case is involved — supply flows from the Nuke Souvenir Packages handed out at Majors and from the open market. Sitting at Industrial Grade, it's among the most abundant finishes linked to the collection.
M4A4 | Mainframe Patterns
You won't find pattern variation on this skin — the circuit-board artwork is fixed in the same position on every copy, so there's no paint seed or blue-gem to chase. What sets two Mainframes apart is simply wear and float, nothing more.
StatTrak & Souvenir
No StatTrak variant exists here, because that edition is produced only inside weapon cases and Mainframe isn't part of one. A Souvenir version is another story — Souvenir copies drop solely from the Nuke Souvenir Packages awarded at Majors and can carry commemorative gold stickers, which turns rare examples into genuine collector pieces. Souvenir items never come with a StatTrak counter.
M4A4 | Mainframe Price
Field-Tested is the value heart of the range — cheaper than the higher grades while keeping nearly the same look, thanks to that wear-hiding base. Across the M4A4 lineup Mainframe is a budget finish overall, so Field-Tested is about as low-cost an entry as skins get. It's available to buy on Skin.Land with instant delivery and no hidden fees.
FAQ
Does the Field-Tested Mainframe look worn?
Not much. The black circuit-board base masks scratches unusually well, so a Field-Tested copy reads as tidy to most eyes, with only light edge wear on close inspection. The green and blue accents don't fade with float, so the skin's signature circuitry always stands out clearly in-game.
Is Field-Tested the best value Mainframe?
For most buyers, yes. It costs less than Minimal Wear (MW) and Factory New (FN) but looks almost the same at a normal viewing distance, and it's the easiest grade to find. Well-Worn (WW) and Battle-Scarred (BS) are cheaper still if you want the absolute lowest entry price and don't mind more visible scuffing.
Which loadout suits Mainframe?
Lean cool and technical. The black base with green-blue circuitry pairs well with dark gloves and other blue- or teal-accented skins, building a stealthy, hardware-themed loadout. It slots neatly next to other tech-styled finishes and avoids clashing with warm reds or oranges, so keep the palette on the cool side.
