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Questions & Answers
what gas system length is this kit Expert Answer

This is for a carbine length gas system.

by Kurt Colbourne, Gear Expert, September 22, 2021
Will i need a special recoil tube/spring/weight? Or will i even need one at all? Expert Answer

No, any mil-spec buffer system should work. You will need the buffer system though as the BCG will still travel back in to the buffer tube during cycling.

by Kurt Colbourne, Gear Expert, September 22, 2021

Product Discontinued by Manufacturer

Adams Arms P-Series Carbine Kit has been discontinued by Adams Arms and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, Rifle Barrels, AR15 Barrels yourself to try and find the perfect replacement for you!

Product Info for Adams Arms P-Series Carbine Kit

This system will work with .223/5.56 x 45 mm NATO.image

Kit includes:

Patented One-Piece Bolt Carrier

P Series Micro Block - Non-Adjustable

Bolt Spring

Installation Instruction Card

The Adams Arms Piston System:

A short stroke free floating piston system.

Is Self-Cleaning.

Carbon and gases are expelled forward, away from operator.

Corrosive resistant coating processes.

Harmonics are not transferred into the barrel.

Doesn't vent directly to atmospheric pressure; this eliminates flash signature and super sonic crack which is optimal for night vision and suppresses fire.

Has a Lifetime Warranty. The new Adams Arms P Series M-LOK Rail was designed for our new P Series Lineup of rifles. Designed and engineered to be multi-purpose, the P Series Rail has a rigid and ergonomic design and features that make this the best choice for everyday enthusiasts, avid shooters, 3-gun competitors, law enforcement, military, and everything in between. This rail is compatible with any of the Adams Arms low profile piston systems and most standard mil-spec AR-15 rifles.

Features of Adams Arms P-Series Carbine Kit:

  • Kit includes:
  • Patented One-Piece Bolt Carrier
  • P Series Micro Block - Non-Adjustable
  • Bolt Spring
  • Installation Instruction Card
  • Specs:
  • Length: 15.5""
  • Material: 6061 T6 Aluminum
  • Inside Diameter: 1.290""
  • Outside Diameter: 1.667""
  • Gas Block Clearance: Height 1.011""
  • Width .450""
  • Weight: 10.528 oz (14.3 oz with barrel nut & hardware)
  • Includes:
  • P Series M-LOK Rail
  • Proprietary Barrel Nut
  • Anti-Rotation Insert with 6-32x.1875 Screw
  • (2) 8-32x.375 Screws
  • (2) 8-32 Hex Nuts

Package Contents:

  • Adams Arms P-Series Carbine Kit
  • Box
  • Piston Kit
  • Rail
  • Rail hardware

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Related Products to Adams Arms P-Series Carbine Kit

Adams Arms P-Series Carbine Kit Unavailable & Discontinued Models

List of Unorderable Models

  • Adams Arms P-Series Carbine Kit w/15.5in M-LOK Rail, Black, FGAA-03306 , MPN: FGAA-03306 , UPC: 812151023766 , Code: ADA-ATB-PSCK-FGAA-03306
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Last updated 2026-09-16 UTC.