New Build #4 Ridgeline RD15 / Geissele 18" SPR Cut Rifled Barrel. (03JUN25) First Range Session up.

[Bigjake83]

New Custom Build #4

(1) New Ridgeline RD15 FDE Build kit.
(2) Geissele 18" Cut Rifled SPR Barrel.
(3) Superlative Arms .750 AGB
(4) VLTOR A5 H2 Buffer System with JP Rifle Length Polshed Spring.
(5) Geissele Enhanced BCG
(6) Geissele FDE Ambi Charging Handle.
(7) Tuned Geissele SSA-E X Trigger.
(8) B5 Precision Stock.
(9) B5 Grip.
(10) Dead Air Xeno Muzzle Brake and Suppressor mounting system.
(11) Atlas BT65-LW17 GEN. 2 CAL BIPOD with Arca adapter.
(12) Vortex HD Gen 3 Razor with Bobro QD Mount.

Surprilitive Arms .750 Set Screw AGB has plenty of clearance.

Assembly was basic and straight forward. make sure to think ahead on what and how you'd like to assemble the RD15 Builders kit.

Both the Barrel and Handguard are mandatory thermofit's, just remember that when you Torque the Barrel Nut down it will expand the Handguard Mounting Area of the Upper receiver requiring heat to expand the handguard for proper installation.

Anti- Rotation Pin Instalation.

Extra Gas Vent Ports.

Looking Forward to sharing the initial Range Report.

More to come.

Jake

 

[bfoosh006]

Very Nice !!

Looking forward to your shooting results.

 

[Black max]

What did you do to “tune” the Geissele trigger?

 

[Bigjake83]

What did you do to “tune” the Geissele trigger?

Aftermarket trigger pack, then tune the individual springs.

 

[6.5SH]

Aftermarket trigger pack, then tune the individual springs.

Have a link for the build kits? Not seeing them on their site.

 

[Bigjake83]

Have a link for the build kits? Not seeing them on their site.

It's because they're sold out I believe.

 

[WeR0206]

Have a link for the build kits? Not seeing them on their site.

It's because they're sold out I believe.

G$ has a ton of their spring kits in stock. I just ordered an ssa-e x kit to swap out for the springs on my ssa x trigger.

https://geissele.com/triggers/trigger-maintenance-spares.html

 

[Bigjake83]

G$ has a ton of their spring kits in stock. I just ordered an ssa-e x kit to swap out for the springs on my ssa x trigger.

https://geissele.com/triggers/trigger-maintenance-spares.html

I think he's referring to the Rifle Build kit, not the springs. Never heard someone refer to Spring kits as build kits.

For the Hammer springs the JP Red Spring is my go to.

 

[NHPiper]

Thanks @Bigjake83 always appreciate seeing you do these.

 

[WeR0206]

I think he's referring to the Rifle Build kit, not the springs. Never heard someone refer to Spring kits as build kits.

For the Hammer springs the JP Red Spring is my go to.

Ah my bad. Misread his post. JP red are solid hammer springs. I also like geisseles and sprinco.

Thanks @Bigjake83 always appreciate seeing you do these.

+1 on this. Thanks for putting these threads together Jake!

I have a 3 new uppers I just put together so I may start a mega thread tracking my load dev etc for them.

 

[Ernest 5.56]

New Custom Build #4

(1) New Ridgeline RD15 FDE Build kit.
(2) Geissele 18" Cut Rifled SPR Barrel.
(3) Superlative Arms .750 AGB
(4) VLTOR A5 H2 Buffer System with JP Rifle Length Polshed Spring.
(5) Geissele Enhanced BCG
(6) Geissele FDE Ambi Charging Handle.
(7) Tuned Geissele SSA-E X Trigger.
(8) B5 Precision Stock.
(9) B5 Grip.
(10) Dead Air Xeno Muzzle Brake and Suppressor mounting system.
(11) Atlas BT65-LW17 GEN. 2 CAL BIPOD with Arca adapter.
(12) Vortex HD Gen 3 Razor with Bobro QD Mount.


View attachment 8699069View attachment 8699070


Surprilitive Arms .750 Set Screw AGB has plenty of clearance.

View attachment 8699071View attachment 8699072

Assembly was basic and straight forward. make sure to think ahead on what and how you'd like to assemble the RD15 Builders kit.

View attachment 8699073

Both the Barrel and Handguard are mandatory thermofit's, just remember that when you Torque the Barrel Nut down it will expand the Handguard Mounting Area of the Upper receiver requiring heat to expand the handguard for proper installation.


View attachment 8699074

Anti- Rotation Pin Instalation.
View attachment 8699075View attachment 8699076View attachment 8699077View attachment 8699078View attachment 8699079

Extra Gas Vent Ports.
View attachment 8699080View attachment 8699081View attachment 8699083
View attachment 8699082View attachment 8699084
Looking Forward to sharing the initial Range Report.

More to come.

Jake

Beautiful looking build! Love the color

Do you have a way to measure the clearance between the glass block and handguard ?

 

[bobke]

Jake
Nice work, as always. I tune my SDE’s second stage pull down-wonder what you’re able to settle on for same. I am good at 1lb. How do you like the SAAE-X after mods and using for awhile? How do they compare to TT’s, knowing the obvious difference in how they arrange stage 1/2?

 

[Bigjake83]

Okay Boys and Girls I took the new RD15 out for a quickie Range Session between Honey-Do tasks.

The barrel shoots exactly the same as my others Geissele Cut Barrels, very accurate. The Mirage today was just a FPITA!! But still turned in some solid groups.

The Geissele Barrel in the RD15 loves the same handloads as well. I didn't have any 24.3gr TAC, 77gr SMK
Handloads leftover but I did have 5rds of 23.8grs and it easily printed Sub Half MOA.

These are literally the first 20rds down the barrel.

I'll hit the range this week early in the morning and give it a solid break-in. I'm 110% confident if I shoot those four loads again with no mirage none will be over 1/2 MOA.

 

[Bigjake83]

Beautiful looking build! Love the color

Do you have a way to measure the clearance between the glass block and handguard ?

There's tons of room around the .750 SA Set Screw AGB, I think the closest it comes to touching the inside of the handguard is at the top left and it's exactly a .030" clearance gap which for that style of build is adequate.

The barrel and handguard are very rigid there's no chance there's going to be any contact from handguard flex, I could easily Mil off .020" of that top left side of the SA AGB but its not needed at all.

 

[Bigjake83]

Jake
Nice work, as always. I tune my SDE’s second stage pull down-wonder what you’re able to settle on for same. I am good at 1lb. How do you like the SAAE-X after mods and using for awhile? How do they compare to TT’s, knowing the obvious difference in how they arrange stage 1/2?

I can get the SSA-E X down to 2-2.5lbs with a butter smooth first stage, absolutely no friction or grit. The second stage break is literally and crisp.

I did one for @j-moose32, maybe he can chime in and fill you guys in from his prospective.

The TT trigger are not compatible IMO, the hammer is oversized and rides higher than it should creating way too much upward force and friction on the bottom of the Carrier.