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Dead Air Silencers Sierra 5 Keymo 5.56x45mm NATO Suppressor w/FH

Dead Air Silencers Sierra 5 Keymo 5.56x45mm NATO Suppressor w/FH, 1/2x28, 1.5x6.27in, Black, 100000230170
Dead Air Silencers Sierra 5 Keymo 5.56x45mm NATO Suppressor w/FH, 1/2x28, 1.5x6.27in, Black, 100000230170
Dead Air Silencers Sierra 5 Keymo 5.56x45mm NATO Suppressor w/FH, 1.5x6.27 in, Black, w/ NFA Trust Registration, 100000230170-KIT1
Dead Air Silencers Sierra 5 Keymo 5.56x45mm NATO Suppressor w/FH, 1/2x28, 1.5x6.27in, Black, 100000230170
1 of 3 images
Dead Air Silencers Sierra 5 Keymo 5.56x45mm NATO Suppressor w/FH, 1/2x28, 1.5x6.27in, Black, 100000230170
Dead Air Silencers Sierra 5 Keymo 5.56x45mm NATO Suppressor w/FH, 1/2x28, 1.5x6.27in, Black, 100000230170
2 of 3 images
Dead Air Silencers Sierra 5 Keymo 5.56x45mm NATO Suppressor w/FH, 1/2x28, 1.5x6.27in, Black, 100000230170
Dead Air Silencers Sierra 5 Keymo 5.56x45mm NATO Suppressor w/FH, 1.5x6.27 in, Black, w/ NFA Trust Registration, 100000230170-KIT1
3 of 3 images
Dead Air Silencers Sierra 5 Keymo 5.56x45mm NATO Suppressor w/FH, 1.5x6.27 in, Black, w/ NFA Trust Registration, 100000230170-KIT1

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Questions & Answers
Color:
Black
Finish:
Cerakote
Caliber:
5.56x45mm NATO
Projectile Caliber:
.224 Caliber
Fabric/Material:
Stainless Steel
Threads per Inch:
1/2x28
Suppressor Outer Diameter:
1.5 in
Suppressor Length:
6.27 in
Weight:
15.4 oz
Included Accessories:
Standard

Code: 29F-MD4-VRSP70-100000230170

MPN: 100000230170

UPC: 810128160001

Product No Longer Available

Product Info for Dead Air Silencers Sierra 5 Keymo 5.56x45mm NATO Suppressor w/FH

From the beginning, our mission has been to give No Quarter in design, performance, and technology. The Sierra 5 stands true to that mission by giving you everything you want out of a dedicated 5.56 silencer.image

This is a hard-use silencer. We are not cutting costs or decreasing lifespan by using stainless steel baffles. We are not sacrificing durability in search of saving a few ounces. The Sierra 5 is full-auto rated with no barrel length restrictions. Love or hate the knurling, it's function over form, directly inline with our goal when developing the Sierra 5. Frankly, if you don't get the Sierra 5 red hot each time you shoot it we might be offended.

Built for professional use, it offers the perfect balance of overall sound and flash suppression while maintaining a compact footprint and minimal weight. By utilizing HUB compatible (1.375-24") mounting adapters, it can be configured to the end user's specific needs and is available out of the box with either our KeyMo or Xeno mounting system.

Featuring the proven winning combination of welded Cobalt 6 baffles wrapped in a stainless outer tube, Sierra 5 is the last 5.56 suppressor you'll need.

The Sierra 5 Xeno includes a 1/2-28 Xeno flash hider and a Xeno adapter. Check out the Sierra-5 KeyMo if you prefer a KeyMo system out of the box.

Package Contents:

  • Dead Air Silencers Sierra 5 Keymo 223/5.56 Suppressor w/FH
  • Dead Air Sierra 5 suppressor
  • Accessory install tools
  • 1/2x28 KeyMo flash hider
  • KeyMo adapter

Ammunition

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PPU 5.56x45mm NATO 0 grain Brass Cased Blank Ammo, 20 Rounds, PPB556
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$15.99
$0.80/Round
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Winchester USA 5.56x45mm NATO 62 grain Green Tip M855 Full Metal Jacket Boat Tail FMJBT Brass Centerfire Rifle Ammunition
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Hornady Superformance 5.56x45mm NATO 75 grain Boat-Tail Hollow Point Match Brass Cased Centerfire Rifle Ammo, 20 Rounds, 81264
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Winchester USA 5.56x45mm NATO 55 grain Ball (M193) Full Metal Jacket Brass Centerfire Rifle Ammunition
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Federal American Eagle 5.56x45mm NATO 55 Grain Full Metal Jacket Boat Tail Brass Cased Rifle Ammunition
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Barnes Vor-TxRifle Cartridges, 5.56x45mm NATO, TSX Boat Tail, 70 Grain, 20 - Rounds, *31191
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(14)
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Hornady Frontier 5.56x45mm NATO 55 Grain Hollow Point Centerfire Rifle Ammunition
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Hornady Frontier 5.56x45mm NATO 68 grain Boat-Tail Hollow Point Brass Cased Centerfire Rifle Ammo, 20 Rounds, FR310
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Hornady Frontier 5.56x45mm NATO 55 Grain Brass Cased Full Metal Jacket Rifle Ammo, 250 Rounds, FR604
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First Breach 5.56 NATO 55 Grain Full Metal Jacket Boattail New C220 Brass Cased Rifle Ammo, 1000 Rounds, 50009
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Fort Scott Munitions, 5.56x45mm NATO, 55 grain, Copper Solid, Brass, Centerfire Rifle Ammo, 20, 556-055-SCV
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(8)
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$1.17/Round
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(5)
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$43.49
$2.17/Round
Fort Scott Munitions 5.56 NATO Copper 62 Grain Centerfire Rifle Ammo, 20 Rounds, 556-062-SCV1
Fort Scott Munitions 5.56 NATO Copper 62 Grain Centerfire Rifle Ammo, 20 Rounds, 556-062-SCV1
(2)
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$31.49
$1.57/Round
Freedom Munitions 5.56x45mm NATO 55 Grain Full Metal Jacket Brass Rifle Ammunition
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Veteran Ammo Defense 5.56x45mm NATO 62 Grain Hollow Point Centerfire Pistol Ammo, 20 Rounds, HMBX-556-24
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List: $49.99 (Save 23%)
$38.49
$1.92/Round
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Hornady Frontier 5.56x45mm NATO 75 grain Boat Tail Hollow Point (BTHP) Brass Centerfire Rifle Ammunition
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(29)
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$0.90/Round
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List: $49.99 (Save 22%)
$38.99
$1.95/Round
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$13.49
$0.65 - $0.67/Round
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(2)
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$0.72/Round
See all 1 models
Newly Added
Atomic Ammunition Cycling Defense AD77 5.56x45mm NATO 77 grain Boat Tail Hollow Point Brass Cased Rifle Ammunition
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As Low As
$35.49
$1.59 - $1.77/Round
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First Breach 5.56 NATO 55 Grain Full Metal Jacket Boattail New C220 Brass Cased Rifle Ammo, 20 Rounds, 556 55 loaded
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(1)
List: $15.99 (Save 13%)
$13.99
$0.70/Round
PMC Ammunition X-Tac 5.56x45mm NATO 55 Grain Full Metal Jacket Rifle Ammo, Metal Box, 840 Rounds, 1102741
PMC Ammunition X-Tac 5.56x45mm NATO 55 Grain Full Metal Jacket Rifle Ammo, Metal Box, 840 Rounds, 1102741
List: $632.49 (Save $49.50)
$582.99
$0.69/Each
Magtech 5.56x45mm Ball M193 - 556ACS
Magtech 5.56x45mm Ball M193 - 556ACS
List: $732.00 (Save $31.51)
$700.49
$0.70/Round
PMC Ammunition X-Tac 5.56x45mm NATO 62 Grain Full Metal Jacket Boat Tail Rifle Ammo, Metal Box, 840 Rounds, 1102742
PMC Ammunition X-Tac 5.56x45mm NATO 62 Grain Full Metal Jacket Boat Tail Rifle Ammo, Metal Box, 840 Rounds, 1102742
List: $650.49 (Save $48.50)
$601.99
$0.72/Each
PMC Ammunition X-Tac Rifle Ammo 5.56 NATO 62 gr Green Tip 1000/ct, 5.56 M855 Case
PMC Ammunition X-Tac Rifle Ammo 5.56 NATO 62 gr Green Tip 1000/ct, 5.56 M855 Case
List: $739.99 (Save 13%)
$645.19
$0.65/Round
Next

Ammo Boxes

1–6 / 6
Previous
Berrys 79462 405 Ammo Box 223 Rem,5.56x45mm NATO 50rd Clear Lid W/Black Bottom
Berrys 79462 405 Ammo Box 223 Rem,5.56x45mm NATO 50rd Clear Lid W/Black Bottom
List: $6.49 (Save 51%)
$3.19
Berrys 29682 405 Ammo Box 223 Rem,5.56x45mm NATO 50rd Smoke Lid W/Black Bottom
Berrys 29682 405 Ammo Box 223 Rem,5.56x45mm NATO 50rd Smoke Lid W/Black Bottom
(1)
List: $6.99 (Save 50%)
$3.49
Berrys 44661 405 Ammo Box 223 Rem,5.56x45mm NATO 50rd Blue Lid W/Black Bottom
Berrys 44661 405 Ammo Box 223 Rem,5.56x45mm NATO 50rd Blue Lid W/Black Bottom
List: $6.99 (Save 50%)
$3.49
Berrys 86410 005 Ammo Box 223 Rem,5.56x45mm NATO 100rd Blue Lid W/Black Bottom
Berrys 86410 005 Ammo Box 223 Rem,5.56x45mm NATO 100rd Blue Lid W/Black Bottom
List: $6.99 (Save 21%)
$5.49
Berrys 11664 005 Ammo Box 223 Rem,5.56x45mm NATO 100rd Smoke Lid W/Black Bottom
Berrys 11664 005 Ammo Box 223 Rem,5.56x45mm NATO 100rd Smoke Lid W/Black Bottom
List: $6.99 (Save 21%)
$5.49
MTM Ammo Rack w 4 RS-50-24 Ammo boxes, Dark Earth/Clear Blue, ARRS
MTM Ammo Rack w 4 RS-50-24 Ammo boxes, Dark Earth/Clear Blue, ARRS
(2)
$43.19
Next

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Dead Air Silencers Sierra 5 Keymo 5.56x45mm NATO Suppressor w/FH Unavailable & Discontinued Models

List of Unorderable Models

  • Dead Air Silencers Sierra 5 Keymo 5.56x45mm NATO Suppressor w/FH, 1/2x28, 1.5x6.27in, Black, 100000230170 , MPN: 100000230170 , UPC: 810128160001 , Code: 29F-MD4-VRSP70-100000230170
  • Dead Air Silencers Sierra 5 Keymo 5.56x45mm NATO Suppressor w/FH, 1.5x6.27 in, Black, w/ NFA Trust Registration, 100000230170-KIT1 , MPN: 100000230170-KIT1 , Code: 29F-MD4-VRSP70-100000230170-KIT1
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Last updated 2026-09-01 UTC.