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Pre-Order ETA July 2020 SPEED Airsoft M4/M16 HPA Tunable Trigger - Blade (Black)

ID: 60827 (TRG-SA5005)
SPEED AirsoftSA5005SA HPA M4 TRG BLD BLK (SA5005)60827
4.8 stars, based on 5 reviews
Pre-Order ETA July 2020 SPEED Airsoft M4/M16 HPA Tunable Trigger - Blade (Black)
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SPEED Airsoft


Pre-orders are always filled first but you can sign up below to be notified when the item is becomes available for immediate purchase.

This is a pre-order item with an ETA (estimated arrival) of July 2020

A pre-order item is an up coming new product, or an item in the process of being restocked to the platform by it's manufacturer.By pre-ordering an item, you will have reserved the inventory availability to receive it before the goods arrive. All pre-order items are eligible for a full refund at any time during the waiting period; simply call or drop us an email with the order # and the pre-order item you would like to cancel for an immediate refund. Due to circumstances such as US customs inspection, factory delays and other situations out of our control, all ETAs (estimated time of arrival) are estimated to our best ability and are subject to change.


  • Full CNC Machined Billet Aluminum Construction
  • Set screw for adjustable backlash
  • Precision sear
  • Hardened pivot pin
  • Weight reduction holes

    • Compatibility:For Polarstar Fusion, F1 and Jack HPA Systems. Wolverine SMP, Hydra, Inferno HPA engines

      Manufacturer: SPEED Airsoft

5 Customer Reviews

(Write a review)

by Patrick V. on 06/11/2019
"This thing is AWESOME when you get it dialed in just right! Night and day difference from the stock trigger on my Krytac Trident MKII SPR with a Polarstar Jack installed. It did require very minor fitment to move smoothly and freely in the stock Krytac gearbox, I just had to slightly ream out one of the holes where the trigger's cross pin fits in the gearbox. After I dialed the trigger in, I shaved the safety lever a little so I could still use the safety while having the trigger essentially pulled most of the way.

Here's how I adjusted my trigger once installed:

Connect just the battery to the FCU. Don't connect air!

Remove the screws and put a tiny amount of blue loctite on them. It'll take a little time to cure so get right to adjusting.

Back the take up screw (front) out and screw in the over travel screw (rear) until it stops. Back the over travel screw out while gently pulling the trigger just until the gun fires (solenoid click). Back it out another quarter turn and test the trigger to make sure it fires every time. You can fine tune from there by turning the screw back in in tiny increments to eliminate more over travel while maintaining reliability.

Then without your finger on the trigger, turn the take up screw in just until the gun fires, and then back it out a quarter turn. Make sure it fires every time you pull the trigger. Again, very fine adjustments.

At this point, you're pretty well dialed in. You can fine tune both screws, a tiny fraction of a turn goes a long way.

I shaved my safety lever a little so I could still use the safety with the trigger dialed in the way I have it. At first the safety would not engage.

Overall, COMPLETELY worth the effort of fitting, installing and tuning. I can rip semi auto shots off very quickly, one guy thought I was using full auto!
by Scott S. on 07/18/2018
"Got an M4 and HPA. These are the perfect complement. This is our third one. Just loctite after it is where you want it. docB
by Scott S. on 03/05/2018
"These are sweet. Nicely made. Adjustment is handy to eliminate excess travel. Put the whole thing together and assemble the entire rifle to be sure the settings are correct. Worth the effort.

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This is a pre-order item.

Pre-order estimated arrival: July 2020

By adding a pre-order item to your shopping cart, you will guarantee yourself to have the item reserved before they are offered as an in-stock item. Often, you will also save on shipping while not risking a rate item being sold out before you have a chance to buy it. Being the largest Airsoft distributor in the America continent, is the gateway for many exciting items entering the Airsoft world. All pre-order items are tagged with our best estimate on arrival times factoring in manufacture delay, us custom examinations and other factorys to the best of our ability. The goods on pre-order generally arrive before they are past due or on-time 99% of the time. All pre-order items are processed subject to item availability on a first-come, first serve basis. All orders and payments are processed at the time of payment. Buyer reserve the rights to a full refund on any pending pre-order items at any time.

This item is currently Out of Stock. Most out of stock items are restocked within 1-3 weeks. Some items may take longer. Please add this item to your wishlist to keep posted on its availability.