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Q&A for Osprey Defense AR-15/M4/M16 Gas-Piston Conversion System — 7 Questions & 7 Answers

Name Osprey Defense AR-15/M4/M16 Gas-Piston Conversion System (5)
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Q
Gozzer, guest, from OH, United States, asked on January 30, 2021

Will the osprey piston conversion work with an adjustable gas block or will I need a new one?

A
Answered by Rusty, member, from WA, United States, on October 08, 2022

Yes, an adjustable gas block should operate fine with the kit.

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Q
Gerry, member, from AZ, United States, asked on November 26, 2020

is the handguard that comes with the kit, do I need it or can I use my own Aero free floating or does the piston not have enough clearance ?

A
Answered by Rusty, member, from WA, United States, on October 08, 2022

Yes, but be sure to use the “Enhanced” handguard— which interfaces with BAR barrel nut. Do not use with the Atlas or Quantum handguards.

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Q
rob, member, from MN, United States, asked on June 27, 2020

Will this fit under a bear creek arsenal full length handguard?

A
Answered by Rusty, member, from WA, United States, on October 08, 2022

Just as long as the handguard’s internal diameter is at least 1 7/8 in.

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Q
Dagious, guest, from MI, United States, asked on January 24, 2020

what is the Handguard ID clearence required

A
Answered by Rusty, member, from WA, United States, on October 08, 2022

The clearance needs to be at least 1 7/8 in (per the manufacture).

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Q
truckerwalt, guest, from ID, United States, asked on November 17, 2019

i have a diamondback DB-15 with a 16"bbl but i have also bought a Bear Creek 20" bbl stainless fluted bbl. will your system work with my AR? i prefer

Expert Answer
A
Answered by Ethan C., Gear Expert, from IL, United States, on December 19, 2019

This will only work with carbine-length gas systems. It most likely won't fit the 20" barrel since most barrels that long use a rifle length gas system. It might work on your 16" barrel, but only if it's a carbine length gas barrel and not a mid-length gas barrel.

2 of 2 found the following answer helpful.
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Q
aurelius, guest, from RI, United States, asked on October 23, 2019

What is the difference between the standard and modified op rod?

Expert Answer
A
Answered by Ethan C., Gear Expert, from IL, United States, on November 03, 2019

The regular op-rod measures 6 3/8”. The modified carbine op-rod is exactly the same length, but the shaft (the black portion) is 2 5/16” long while the regular Carbine shaft is 2 25/32”. The modified rod allows for more travel when using a free-floating hand guard’s wider barrel nut.

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Q
rick, guest, from NY, United States, asked on June 21, 2019

rifle length available?

Expert Answer
A
Answered by Ethan C., Gear Expert, from IL, United States, on November 03, 2019

Unfortunately we only carry the carbine length versions at this time but Osprey Defense does make this for mid-length and rifle-length as well.

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