Any AR15 SPR Builders here?

[RRotz]

Ok, here's what I was thinking for a custom SPR....based on this Varminter Style Upper.....



Upper:

A4 Flat Top Upper.....of course......
20" HBAR Chrome Moly
Standard Free Float Tube KNURLED (Drilled and tapped on TOP ONLY)
PRI Front Sight
BUIS ARMS #40
YHM 12" inch rail attached to the top of the Free Float Tube
SPR Brake/Collar
Harris Benchrest Bipod
SPR Barrel Collar (Thread Protector) For Looks only.....

Lower:

Olympic Lower
RRA NM Trigger group
A2 Stock Maybe a Clubfoot A1 length
A2 Pistol Grip

Can ya'll picture that and would it be an okay looking, great shooting SPR?

I've shelved plans for a Bolt action......for now.

[RRotz]

The Question is:

Should I just modify the standard FF Tube with a rail the entire length at the top or....

Should I get the Quad Rail Yankee Hill Machine Lightweight FF Tube like this:

[bigant]

I like YHM, its nice stuff for the money..but if you want to spend some cash the DD rails are pretty nice too. I would put a rail on it though....

Bigant

[Akkid]

Definately do some sort of rail system. Im parting out my SPR if interested. Ill give you one heck of a deal on a top shelf barrel.

[RRotz]

Originally posted by bigant
I like YHM, its nice stuff for the money..but if you want to spend some cash the DD rails are pretty nice too. I would put a rail on it though....

Bigant

I'm trying to do a budget SPR, can't afford the WOA barrel or an expensive rail system so I'd rather have the full length rail attached to a standard FF Knurled Tube.

Also want the bipod to be mounted on a stud attached to the tube instead of on a rail....too high, I'd like the benchrest harris pod to be low, low, low.

No real need for all the rails except for the top.

[48th Highlander]

SPR???? Squirill poppin rifle? I think this is an illfated idea some airforce guy must have come up with. If I am going to add all of that weight to an AR15, it may as well be an AR10 or SR25.

Am I stupid to think this??? I just don't understand the concept.

[DK]

I hear ya Darren- Everyone has their own likes/dislikes, but after playing with a lot of "go fast" AR15's, I've come full circle and prefer a simple carbine length lightweight barrel on a collapsable stock or even a standard A2 stock.

DK

[xcpd69]

Originally posted by DK
I hear ya Darren- Everyone has their own likes/dislikes, but after playing with a lot of "go fast" AR15's, I've come full circle and prefer a simple carbine length lightweight barrel on a collapsable stock or even a standard A2 stock.

DK

I hear ya man.

I too like a simple, short, handy and LIGHT carbine in an AR platform. Kinda like the KISS principle. If someone wants to lug around a 10lb platform that looks like someone went nuts with an erector set, go ahead. Variety is the spice of life, I once heard.

It's just not my thing.

Especially when I have an 8lb 16 inch barrelled FAL, that will have a folding stock in a little more that 2 months. With a bit of luck.

[48th Highlander]

I am not raining on anyone's parade, I just don't understand.

I try to go to AR15.com every now and again to see what is new. Seems like 6.8mm SPC is about it. Otherwise, its all about colt vs bushmaster, arms vs ggg, knights vs pof. I could care less about rails, other than the one on top. You know you are addicted to AR 15's when you have more than 1 light mounted on your rifle at the same time.

I like a rifle that doesn't need an ammo pouch dedicated to batteries.

[HenryJ]

Here's what I'm thinking about building. Given that an SPR is basically meant to be a longer range precision semi-auto, I'm going with a RRA 1/8 stainless barrel, HBar, not bull, free-floated, and with a post 9/14 threaded end. I'm also thinking about leaving it with a fixed front sight ( I can always drop a det. carry handle in a pocket if the scope goes TU). With a 70-77 grain bullet, I figure this gives me a viable 600 yard rifle. A Hornady 75 gr. BTHP Match with 2800 at the muzzle is still doing about 1598 fps and 420 ft-lbs at 600 yards. That should raise a welt.

[RRotz]

Here's what I'm going to base my SPR on......RRA Flaptop, YHM FF Customizable Tube....full rails on top, 3 o' clock, 9 o' clock and a half rail at the back half of 6 o'clock. Bipod stud at the front so the Harris Benchrest sits flush with the tube...ARMS #38 Sleeve on top.....HAKKO Mildot Scope 8-32x50.



WOA 18" SPR Contour Barrel, YHM or PRI Folding Frontsight/Gas Block, SPR Brake/collar. VLTOR Carbine Collapsing Stock, OLY Lower, RRA NM Trigger Group.

[ultramagbrion]

I like a rifle that dosent need an ammo pouch dedicated to batterys

The whole 'star wars' look is kinda cool,but what happens if its dropped?
Its kinda like these new sport bikes that do 3 thousand dollars in damage when they fall off their kickstands!

Ive got a 24" Colt elite match upper I play with thats cool,but the generic M4gery is what stays on that lower most of the time.Open sights,no pic-rails,or electronics.

Id like to build an 16'' ported bull barrel upper in the new 6.8SPC with a high rise flat-top,and put a decent holo type sight ,and flip down irons on it.But it can wait for now.

[TheOtherChris]

Originally posted by RRotz


I'm trying to do a budget SPR, can't afford the WOA barrel or an expensive rail system so I'd rather have the full length rail attached to a standard FF Knurled Tube.

Also want the bipod to be mounted on a stud attached to the tube instead of on a rail....too high, I'd like the benchrest harris pod to be low, low, low.

No real need for all the rails except for the top.

My opinion is worth exactly what you paid for it, but keep in mind that I was building these in the 80's.

The first flat top I built had the carry handle milled off and Redfield mount and rings on top.
I used an Oly FF tube as it was the only thing available.

Since it was a virgin upper, I torqued the tube down three times to index it so I would know where to put the stud and access holes for some other accessories.

Well, when I mounted it the 4th time, it had moved again and was no longer where I needed the studs and other stuff to be.

The moral is that if you use a standard knurled tube, you need to mount you accessories after you torque it.
If you have to remove the tube later for any reason, it will not index back to the original place without changing the torque.

Good luck,

The Other Chris

[RRotz]

Originally posted by TheOtherChris


My opinion is worth exactly what you paid for it, but keep in mind that I was building these in the 80's.

The first flat top I built had the carry handle milled off and Redfield mount and rings on top.
I used an Oly FF tube as it was the only thing available.

Since it was a virgin upper, I torqued the tube down three times to index it so I would know where to put the stud and access holes for some other accessories.

Well, when I mounted it the 4th time, it had moved again and was no longer where I needed the studs and other stuff to be.

The moral is that if you use a standard knurled tube, you need to mount you accessories after you torque it.
If you have to remove the tube later for any reason, it will not index back to the original place without changing the torque.

Good luck,

The Other Chris

I've decided on the SPR barrel and a custom YHM tube where I can add rails that I want and not have rails that I don't want.

[garandman]

Does this count??



The barrel is the WOA barrel from Adco Firearms with the SPR'ish brake

The handguard is Fulton Armory, and I WECSOG'd some rails at the 3, 6 and 9 o'clock position. The 6 o'clock rails is set up with a QD bipod attachment.

At 12 o'clock is a full length rail WECSOG'd onto the handguard, and a ARMS Super EX from Fulton Armory marries the upper to the handguard.

Rock solid.

The gas block and the pistol grip are both from Brownells. I highly recommend this brownells grip. Its NOT a benchresters only grip, you can use it in a "tactical" situation, but it DOES put you trigger finger in ideal position.

I don't have BUIS's yet.

The scope is a Super Sniper mildot 10X fixed. All you realistically need for an AR.

[garandman]

Originally posted by RRotz
The Question is:

Should I just modify the standard FF Tube with a rail the entire length at the top or....

I got the Fulton Armory FF tube.

It has a barrel nut that is outside threaded to receive the FF tube. There is a locking collar on the barrel nut that allows you to index the tube to wherever you want, then lock it in place with the collar.

Infinite adjustability.

AFTER I had all that set up, I drilled and tapped for the rail sections.

I like the way mine came out.....

[garandman]

Oh, I should mention -

Mine is the 1 in 7 barrel, and thus far I've only used 62 grain junk ammo to break it in.

Its one ragged holing at 25 yards, if I do my part.

I jyst got some 69 and 75 grain stuff in, so its time to head to the range.

[RRotz]

Originally posted by garandman
Does this count??



The barrel is the WOA barrel from Adco Firearms with the SPR'ish brake

The handguard is Fulton Armory, and I WECSOG'd some rails at the 3, 6 and 9 o'clock position. The 6 o'clock rails is set up with a QD bipod attachment.

At 12 o'clock is a full length rail WECSOG'd onto the handguard, and a ARMS Super EX from Fulton Armory marries the upper to the handguard.

Rock solid.

The gas block and the pistol grip are both from Brownells. I highly recommend this brownells grip. Its NOT a benchresters only grip, you can use it in a "tactical" situation, but it DOES put you trigger finger in ideal position.

I don't have BUIS's yet.

The scope is a Super Sniper mildot 10X fixed. All you realistically need for an AR.

I decided to go with the YHM custom tube, which is just like the FA tube and the YHM flip up front sight/gas block.....I have no wescog skillz so I'll have to send my upper off to be assembled.......I'd like the top full length rail but don't know if they fit the YHM tube with rail.....what ARMS rail is that you have mounted on top?

I'm going for this look......

[RRotz]

G-man,
How effective is the SPR'ish brake? It says NONFUNCTIONAL on the adco website......does the brake minimize recoil at all?

[Broadsword]

Here's our newest arrival. Did some trading for it at the last gun show. Haven't fired it yet so can't comment. The scope is a loaner off of Dijons .270 hunting rifle that is getting reworked before this hunting season starts. Since we broght it home I've done some more trading and have a Harris bipod on it and picked up five USGI 30 rd magazines for it. I'm toying with the idea of setting it up with a nice piece of glass ie Leupold Tactical 3.5-10X40 M1 and trimming the barrel back from 24" to 18" with a Vortex flash hider. It's going to be that or possibly sell/trade the upper and A2 stock in favor of an M4 upper and telescopic stock after the ban sunsets. If it doesn't go either of these directions it probably won't survive the re-organization. Dijon and I have been talking about selling just about everything and starting from scratch with the guns, gear etc. The two FAL's and her .44 S&W will probably be the only ones to make it through.
No rail systems etc. for me. I like to keep it simple.
Broadsword

[garandman]

Originally posted by RRotz
G-man,
How effective is the SPR'ish brake? It says NONFUNCTIONAL on the adco website......

It is 100% effective....at protecting the muzzle threads.

I'd say it has equal recoil as any other AR - which is none.

Prolly the weight of the rifle has a greater effect minimizing recoil than the brake does. I got it to protect the muzzle threads, and cuz it looks cool'ish.

My guess is it would also serve to direct muzzle flash left and right vs. up into the optics line of sight.

Pure guess on that, no scientific backup.

[RRotz]

Originally posted by garandman


It is 100% effective....at protecting the muzzle threads.

I'd say it has equal recoil as any other AR - which is none.

Prolly the weight of the rifle has a greater effect minimizing recoil than the brake does. I got it to protect the muzzle threads, and cuz it looks cool'ish.

My guess is it would also serve to direct muzzle flash left and right vs. up into the optics line of sight.

Pure guess on that, no scientific backup.

I was thinking of an AK74.....Bushmaster brake......dunno yet. $100 is a bit steep for me just for looks......but no doubt, it looks the cats ass!

[garandman]

Originally posted by RRotz


I was thinking of an AK74.....Bushmaster brake......dunno yet. $100 is a bit steep for me just for looks......but no doubt, it looks the cats ass!

I agree. It has no functional advantage over most anything else.


You can get the SPR barrel and brake from Adco Firearms for $322 - which is an additional $62 over the WOA barrel.

[RRotz]

Originally posted by garandman


I agree. It has no functional advantage over most anything else.


You can get the SPR barrel and brake from Adco Firearms for $322 - which is an additional $62 over the WOA barrel.

Hmmmm, that's a humdinger......I'll bite. You only live once.

So, are these Adco brakes actually made by Adco or are the REAL DEAL SPR Brakes available to the peasants......er.....public?

[Calvert1]

I used YHM FF rails to build my SAM-R replica. Been thinking about building an SPR since I like the 18" barrels.

[RRotz]

Originally posted by Calvert1
I used YHM FF rails to build my SAM-R replica. Been thinking about building an SPR since I like the 18" barrels.

What front sight/gas block are you using?

[garandman]

Check with Adco firearms to see who makes the brake - I'm not sure.

I'm not even really sure what's the difference between this brake and the real thing. I imagine the real thing has an integral suppressor mount.

[Calvert1]

Originally posted by RRotz


What front sight/gas block are you using?

YHM Folding FS/gas block.

Vendor named "BrightFlashlights.com" on ARF.com sells them cheap.