Delta Force Best SMG Guide: MP5, Vector, P90, Vityaz, QCQ171 and MK4 Builds Compared

🎯 The core idea

Razor's SMG deep-dive covers 13 submachine guns with full builds — this guide profiles six of them spanning distinct playstyles (all-rounder, max fire rate, large-capacity bullpup, control-focused budget pick, a compact newtype option, and the one SMG that keeps out-performing actual assault rifles) with their Gunsmith stats read directly from the source footage, since no auto-captions exist for this video.

• free costs nothing
• cheap small cost
• setup needs preparation
• grind pays off slowly
• skip the thing to stop doing

MP5: the versatile all-rounder

The MP5 sits at 26 damage, 18m range, 67 control, 56 handling, 41 stability and 48 accuracy, with an 820 RPM fire rate, a 50-round magazine and a 514 m/s muzzle velocity, running in auto, single or burst fire. This build uses the K1 Elite Bevel Foregrip for horizontal control, horizontal firing stability and horizontal camera stability — its calibration trades a small amount of extra control and ADS movement speed for +18% stability while moving and +4% ADS speed, a fair swap for a gun whose base stats already lean toward control over raw stability.

Vector: the fire-rate outlier

At 1091 rounds per minute, the Vector fires faster than almost anything else in this lineup, paired with a 70-round magazine, 20 damage, 20m range, 52 control, 54 handling, 43 stability and 41 accuracy. This build runs the Lightning Rail Stock for handling, ADS movement speed and stability, calibrated for roughly +5.9% extra control and +5% hip-fire aim speed at the cost of about -17.8% aiming stability while breathing and -4% firing stability — a build that leans into the gun's already-aggressive identity rather than trying to tame it into a laser.

P90: bullpup design, biggest magazine

The P90 is a 5.7x28mm bullpup with a distinctive top-mounted magazine, holding 50 rounds at 22 damage, 17m range, 79 control, 45 handling, 58 stability and 48 accuracy, firing at 898 RPM with a 480 m/s muzzle velocity in single or auto. Its 79 control is the highest of any SMG in this lineup, which is what makes it a strong pick for players who struggle to tame recoil on faster-firing guns. This build adds the MEO Micro Sight Riser for stability and handling.

Vityaz: control and stability over range

The Vityaz trades accuracy hard for handling: 25 damage, only a 23m range, 55 control, 57 handling, a strong 60 stability, but just 8 accuracy, at 700 RPM with a 45-round magazine. This build's Skeleton Sniper Stock adds aiming stability while breathing and extra control at the cost of ADS movement speed — sensible on a gun whose low accuracy stat means you're relying on close-range spray rather than precise single taps anyway.

QCQ171: a newtype compact option

The in-game description calls the QCQ171 "a newtype submachine gun that fires 9x19mm ammo — easy to carry, compact yet with fierce" (the description is cut off on screen at that point). Its numbers back that up: 25 damage, 23m range, a strong 73 control, 55 handling, 46 stability and 38 accuracy at 727 RPM, using a 45-Round Extended Mag that holds 45 rounds at the cost of handling, stability, accuracy, firing stability and firing camera stability.

MK4: the SMG that keeps outperforming actual assault rifles

The MK4 is a US-made 4.6x30mm SMG, and its stats explain why it keeps showing up on assault-rifle discussions despite not being one: 88 control and 86 stability are dramatically higher than any other SMG covered here, at 23 damage, 23m range, 46 handling and 46 accuracy, firing at 872 RPM with a 48-round magazine. This catalogue's own Season 10 gun tier list and AR cross-check guide both independently confirm the MK4 held up into Season 10 (Meltdown) at the bottom of A tier, specifically because of that same low-recoil profile — a rare case of an eight-month-old build recommendation still matching current-season standing.

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1. Pick a stock or attachment based on the gun's weakest stat, not its strongest setupThe Vityaz and QCQ171 both lean into their already-strong control with a stock that trades ADS speed for more stability — worth doing only because their accuracy is already the limiting factor, not their recoil.

How this guide was fact-checked

This guide is sourced from Razor's "Best SMG Builds in Delta Force (All of Them)" video (33:18, published 2025-12-01) — a video with no auto-generated captions or subtitles available, so every stat and description quoted here is read directly from the Gunsmith stat panels captured in its footage rather than from narration. The video is roughly eight months old at the time of research, past the six-month window this catalogue treats as a meta-risk flag for build content. Only one of the six SMGs featured here (the MK4) could be directly cross-checked against this catalogue's Season 10 gun tier list and AR guide, both of which confirm it independently held its position into Meltdown; the other five SMGs' exact stat values (damage, control, stability and so on) reflect the build as recorded and have not been independently re-verified against the current season's Gunsmith numbers.

What this guide doesn't answer

This guide only profiles six of the 13 SMGs covered in the source video (the Bizon, Uzi, SMG-45, MK4's alternate hipfire-burst build, SR-3M and MP7 aren't included here) — see the full source video if you need coverage of every SMG it discusses. It also doesn't give a current Season 10 SMG tier ranking, since only the MK4 could be independently cross-checked against this catalogue's Season 10 tier list guide; treat the other five weapons' stats as an eight-month-old snapshot rather than confirmed current numbers. Finally, it doesn't cover attachment-by-attachment build reasoning beyond the single highlighted piece per weapon (stock, foregrip, optic or magazine) — the source video goes deeper into full builds per gun than is reproduced here.