Dead Air CTP5

5.56 / 6mm suppressor

Available in 3 versions

Image via Silencer Central

CTP5 Keymo

Dead Air · 5.56 / 6mm

$1099

MSRP

Specs on the box

Differs between versions

Mounting

Mount type (differs between versions): Proprietary
Included mount (differs between versions): Keymo
Mount removable (differs between versions): No

Build & use

Length (differs between versions): 6.55"
Diameter: 1.6"
Weight (differs between versions): 14.9 oz
Material (differs between versions): Haynes 282
Method (differs between versions): 3D Printed
Finish: Cerakote
Rated backpressure: Hybrid
User serviceable: No
Full-auto rated: Yes
Made in: USA - TX

Check price · Silencer CentralNon-Affiliated Link

Sound

115.7

LIAeq100ms (dB)

Muzzle · 14.5" AR-15 · 5.56 Lake City M193

Backpressure

−3.0

Change in cycle time (ms)

Primer strike → bolt closed, vs bare host

Flash

Not yet tested

Metric TBD

Stand-in — not yet defined

BACKPRESSURE0.0ms

FLASH--

Add to Gauge

Must share caliber · 5.56 · Must be tested

Loading…

SCOUT REPORT

Numbers for this report produced with: CTP5 Direct Thread · differs in material, construction, length, weight, mount

Scout Report

SilencerScout Sound Test

Metered November 10, 2026

Our take

I was happy to see the CTP5 being a strong performer on the +14.5" barrel lengths. So many suppressors are optimized on a 10.5" barrel but most gun owners have a rifle length barrel. The CTP5 provides good performance at 14.5" and class leading performance at 18".

Read our full take

Sound sweep

5.56 Lake City M193 — AR-15 barrel-length sweep

Metric	10.5" AR-155.56 Lake City M193		14.5" AR-155.56 Lake City M193		18" AR-155.56 Lake City M193
Metric	SE	ML	SE	ML	SE	ML
LIAeq100ms (dB)	119.2	117.2	119.5	115.7	114.7	113.7
Peak (dB)	149.8	148.1	150.3	147.3	145.9	145.3
Peak (dBA)	146.6	143.5	139.7	142.4	136	139.6
Impulse (Pa·ms)	67	93.2	73.3	74.6	46.7	65.7

No image available

The AR-15 hosts used for the 5.56 barrel-length sweep

How to read this report

Our core performance metric is LIAeq100ms: the whole pressure curve, A-weighted to approximate the human ear, integrated over 100 ms. Peak and impulse are shown alongside for context. Every configuration is metered at SE (shooter's ear) and ML (muzzle, left side).

Sound metering methodology

About the Test Platform

Suppressors are tested across a full range of barrel lengths and gas systems. See our article on the test platforms for full detail behind our test configurations.

The AR-15 hosts behind the 5.56 tests

Cold-can first shot

First round pop

On the first shot, unburnt propellant mixes with the oxygen sitting inside the suppressor and burns a second time in the can. That secondary combustion often makes the round louder than the ones behind it. Once that oxygen is burnt off, follow-up shots settle into a quieter, steadier number. This is commonly called first round pop, or FRP. Because a hunter, marksman or defensive shooter may only ever fire one or two rounds, we isolate the first-round data rather than bury it in the average, and present it here. The magnitude of first round pop varies substantially across designs.

Shooter's ear · LIAeq100ms (dB)

Host	First round	Subsequent	Pop
10.5" AR-155.56 Lake City M193	119	119.2	-0.2
14.5" AR-155.56 Lake City M193	119.9	119.5	+0.4
18" AR-155.56 Lake City M193	116	114.7	+1.3

Change in cycle time

Backpressure

Cycle time runs from primer strike to bolt closed. Backpressure drives the bolt home sooner, so a bigger drop versus the bare host indicates more backpressure and more wear.

Change in Cycle Time

−3.0 ms

Primer strike to bolt closed: 55.5 ms suppressed vs 58.5 ms bare host

Performance for its size

Efficiency metrics

These metrics nest raw decibel performance in the important context of how well a suppressor performs for its size.

Quoted off 14.5" AR-15 · 5.56 Lake City M193. Each value is dB reduction ÷ the listed dimension, at shooter's ear (SE) and muzzle left (ML).

Per cubic inch (dB/in³)

Suppressor	SE	ML
CTP5 Keymo · thisestimated volume	1.5	2.23
CTP5 Xenoestimated volume	1.67	2.48
CTP5 Direct Threadestimated volume	1.79	2.66

Per ounce (dB/oz)

Suppressor	SE	ML
CTP5 Keymo · this	1.12	1.67
CTP5 Xeno	1.17	1.74
CTP5 Direct Thread	1.22	1.82

This metric will be more mount dependent than most. The CTP5 weight will include a permanently attached DT, Xeno, or Keymo mount depending on which you choose. Considering this, the performance per Oz is spectacular on this small, low profile suppressor.

Per inch (dB/in)

Suppressor	SE	ML
CTP5 Keymo · this	2.56	3.8
CTP5 Xeno	2.84	4.22
CTP5 Direct Thread	3.05	4.53

Tuned vs untuned

Tuning overhead

This metric captures the tuning overhead of the suppressor when paired with sound-mitigating part choices. A valuable metric for understanding what overhead you, the end user, have to push the performance envelope. Both rows are the same barrel and the same load. Only the parts used change.

How we tuned

Tuned with Riflespeed gas block setting #4. Buffer system is Sprinco White and H2 buffer.

Metric	14.5" AR-155.56 Lake City M193		14.5" AR-15 Tuned5.56 Lake City M193		DifferenceTuned − untuned
Metric	SE	ML	SE	ML	SE	ML
LIAeq100ms (dB)	119.5	115.7	115.5	115.7	-4	+0
Peak (dB)	150.3	147.3	146.2	148.1	-4.1	+0.8
Peak (dBA)	139.7	142.4	135.2	142.3	-4.5	-0.1
Impulse (Pa·ms)	73.3	74.6	55.8	79.1	-17.5	+4.5

No image available

The 14.5" AR-15 host used for the 5.56 tuning comparison

Same host, different loads

Ammo test

Metric	14.5" AR-155.56 Lake City M193		14.5" AR-155.56 Lake City M855		14.5" AR-155.56 Black Hills OTM 77gr
Metric	SE	ML	SE	ML	SE	ML
LIAeq100ms (dB)	119.5	115.7	Not yet tested	Not yet tested	Not yet tested	Not yet tested
Peak (dB)	150.3	147.3	Not yet tested	Not yet tested	Not yet tested	Not yet tested
Peak (dBA)	139.7	142.4	Not yet tested	Not yet tested	Not yet tested	Not yet tested
Impulse (Pa·ms)	73.3	74.6	Not yet tested	Not yet tested	Not yet tested	Not yet tested
	No image available		No image available		No image available

Check Price

Where to Buy

Silencer CentralNon-Affiliated Link

Reviews & Field Reports

Links above point to third-party sites. SilencerScout does not control their content and earns no affiliate commission from these review links.