Geissele Automatics 5.56 Super Duty AR-15 Rifle - Black - 16"

Manufactured by Geissele Automatics
SKU: 08-188B
MPN: 08-188B
Manufactured by Geissele Automatics
1 Review

In Stock

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Items that are regulated by the ATF have restrictions and requirements: 
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Built on MIL-SPEC receivers and featuring Geissele Super Duty lower parts kit, the Geissele Super Duty AR-15 carbine is designed and assembled from the ground up with the idea that quality doesn't have to be matched to high cost. Unlike a standard AR-15 or M4, the Super Duty rifle features an ambidextrous Posi-snap safety selector, Super Duty trigger guard, Maritime Extended bolt catch, and to top it off the SSA-E X Super Semi-Automatic Enhanced trigger with lightning bow. The 16” barrel is precision machined and cold hammer forged in house and features a heavy profile and mid-length gas system. Combined with the Super 42 buffer spring and H2 buffer weight keep this rifle running reliably and shooting flat. It's even been finished with a Black Cerakote finish. Why build a rifle from the ground up when you can grab this one off the shelf with all the parts you were going to use anyway.


  • 16” cold hammer forged heavy profile barrel
  • Chrome lined bore with 1:7 twist
  • Reliability Enhanced Bolt Carrier Group with Nanoweapon Coating
  • Geissele Stressproof Bolt
  • Chambered in 5.56 NATO
  • Mid-Length with Super Compact gas block
  • Super 42 buffer spring and H2 buffer
  • SSA-E X Lightning Bow 2-Stage Trigger
  • 15” SMR MK16 free float M-LOK handguard
  • Geissele Sparkout Flash Hider
  • B5 Systems carbine stock
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Barrel CoatingManganese Phosphate
Barrel ContourHeavy
Barrel Length16.25
Barrel LiningChrome
BrandGeissele Automatics
Caliber Gauge5.56 NATO
Gas System LengthMid-Length
Gas System TypeDirect Impingement
Handguard15 in Geissele SMR MK16
Magazine Capacity30
Muzzle DeviceGeissele Sparkout Flash Hider
Thread Pattern1/2 X 28
Twist Rate1:7
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

1 review

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Amazing rifle but minor dings.

by -

An amazing rifle right out of the box, although the stock photos on the site are incorrect. It ships with surefire closed warcomp, and the A2 grip is replaced with the geissele grip. The trigger is great as to be expected of geissele, and the work that was put into it was also top notch. Not many companies will stake the castle nut two times.
Only reason the rifle isn't 5 stars is that mine came out of the box with two large and very noticeably nicks to the rifle that are deep. On the upper receiver and hand guard. Other then that rifle is great.