Spectre Ballistics Light Practical Carbine - NR Receiver Set

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I just removed the upper handguard to see. No leakage.
As I mentioned, I took a piece of scrap cleaning rod, and turned it in the lathe until it just fit the gas block. Used a drill, and spotted both sides through the gas tube retaining pin hole. Removed the plug, drilled from each side until the holes intersected, and the drill passed through. I did it this way to insure that the hole didn't run off on an angle. Replaced the plug, tapped the roll pin into place.
 
RedApe said:


Going to take out tomorrow. I put a 7.62x39 bits into it as I haven't had a chance to shoot it prior to the ban(7.62 upper)
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Let us know how it goes. With a good barrel and site, you could beat out a stock SKS at range for accuracy, and likely match a good 7.62x39 bolt gun like a VZ. An SBR version would provide the hitting power of Blackout at much less expense.
 
Ustauk said:
Let us know how it goes. With a good barrel and site, you could beat out a stock SKS at range for accuracy, and likely match a good 7.62x39 bolt gun like a VZ. An SBR version would provide the hitting power of Blackout at much less expense.
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the first few rounds (lacquered brass) were sticking on extraction. after around 10 it was smooth. i suspect just lack of a little bit of lube.
 
Went to the range yesterday with two LPCs to sight in and function test. One a fairly lightweight 6.5 grendel, the other a LR build in 224 valkyrie.
The short 5rd metal ASC mags fit tight in both magwells, and I had two mags that wouldn't insert at all. They were all tight on the body, not on the spine, judging from the wear marks on the mags. Luckily I had two longer ASC mags (5/10) that seemed to work fine. Will see what I can do with a vise on the 5rd mags, because we don't have much selection for Grendel/Valkyrie mags up here. Tried 223 mags and they wouldn't feed worth a damn with either cartridge.

Had zero feeding or extraction issues with the Criterion 224 Valkyrie barrel. Tried 4 different boxes of factory ammo, everything worked as it should. Easy extraction with all of them, everything worked as I had hoped.

The Odin Works 6.5 Grendel barrel was a different story entirely. Very hard extraction with both types of factory ammo I brought out. Hornady 123gr SST (brown box) was the worst, I lost blood getting those to extract. Hornady 123gr Black was slightly better, as in it took 75% as much effort, but IMO completely unusable for hunting or camp defense. I bought the barrel a couple years ago, in anticipation of a Maccabee SLR receiver set that never appeared, and I'm wondering if I got one of the bad barrels that they recalled a while back. Will be measuring the spent brass and pulling the barrel to do the plunk test in the next few days to see if I got one of their bad barrels. IBI could be getting a call from me soon...

As others have noted, you need to be aggressive with them to chamber a round. For hunting situations where you're trying to quietly chamber a round, that won't be an easy task.
The round, cylindrical bolt knob does the job, but I'm hoping different knob options eventually come out. I, personally, wouldn't mind having a more rounded off end (an enlarged ball end, like alot of bolt knobs, would be my preference). The round cylinder is A-OK to pull back on for ejection, but I did slip once trying to eject a round out of that POS Grendel barrel, and cut my knuckle open. It could definitely see that smooth bolt knob get slippery if you're hunting in the snow, especially with gloves on. Needing to use some force to chamber rounds created a hot spot on my palm after 30-40rds. I have a bruise on one palm this morning. A enlarged, rounded end to the bolt handle would eliminate this, and also provide more grip. Just a suggestion. If anyone decides to build a ####-shaped bolt handle for these I will immediately buy two of them haha.

Curious to hear what others think once more are out in the wild.
 
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My LPC with a 20" 6x45 barrel. Had it out at the range on Friday, ran well, a few sticky extractions, but nothing serious. Im really liking this LPC platform, however it begs for a short barrel, i will likely land up putting a 10.5" 300 blackout barrel on it.
 

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The beer keg k31 bolt handle does look interesting. I'd have to try one first to see how it feels, but I like the concept.
What I had in my head was something like the bolt handle/knob on the Browning Maral and Blaser straight pull rifles (except more or less straight out to avoid hitting a knuckle on the mag release). To be honest, it really only needs a ridge near the end for better grip, my soft city hands can just learn to toughen up.

On the way into work this morning I had the idea of using hockey tape to create a narrow, rounded ridge near the end of the factory knob. It's cheap, and easy to remove if I don't like it.
 
556x45guy said:
Old-timey beer keg bolt handles like the Swiss K11/K31 would be pretty swell. A fortune awaits for an enterprising machinist!
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We'd like to do a K31 style bolt handle for the rifle. It's a fantastic design and works great. If some other manufacturer wants to do one we'd certainly be cool with that.

We're also finishing up a 3d printable stock for the Light Practical Carbine that can be installed and removed without tools. This will be freely downloadable for people to print themselves. Watch out for it next week.

We should have some more receiver sets ready to go quite soon. They are being vapor blasted + anodized now. Don't worry, the upper and lower colors will match :p
 
SpectreBallistics said:
We'd like to do a K31 style bolt handle for the rifle. It's a fantastic design and works great. If some other manufacturer wants to do one we'd certainly be cool with that.

We're also finishing up a 3d printable stock for the Light Practical Carbine that can be installed and removed without tools. This will be freely downloadable for people to print themselves. Watch out for it next week.

We should have some more receiver sets ready to go quite soon. They are being vapor blasted + anodized now. Don't worry, the upper and lower colors will match :p
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That’s good to know! My MRA set looks like sh!t. Waiting patiently for The call for my SBI sets.
 
SpectreBallistics said:
We're also finishing up a 3d printable stock for the Light Practical Carbine that can be installed and removed without tools. This will be freely downloadable for people to print themselves. Watch out for it next week.
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Way cool! Did you think about 3d printing a folding stock? You may want to talk to Motiuk Manufacturing in Vegreville for some ideas, they modified a WK180C lower to fit an original 180 stock, and made it fold.
 
Ustauk said:
Way cool! Did you think about 3d printing a folding stock? You may want to talk to Motiuk Manufacturing in Vegreville for some ideas, they modified a WK180C lower to fit an original 180 stock, and made it fold.
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We have no plans on designing a folding stock, or selling a printed stock. This is kinda a just for fun project and we're gonna release the design under the creative commons license so people who like 3d printing can make one to try out. It also takes about 22 hours to print, so it's not really commercially viable to manufacture.
 
I tried a MDT folding stock adapter on my LPC. It almost works. The hinge knuckle contacts the receiver when the stock is folded. A slight redesign of the MDT folding mechanism, and it would work. Altering the LPC upper would be difficult.
 
Patt08 said:
That’s good to know! My MRA set looks like sh!t. Waiting patiently for The call for my SBI sets.
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In what way does the MRA set look like s#@t? I ask because I am waiting for both an MRA set and a Spectre Ballistics set. Will build one and gift the other. So far still waiting for an email.
 
tiriaq said:
I tried a MDT folding stock adapter on my LPC. It almost works. The hinge knuckle contacts the receiver when the stock is folded. A slight redesign of the MDT folding mechanism, and it would work. Altering the LPC upper would be difficult.
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that's unfortunate. with the upper receiver being the same width as the castle nut, and flat-sided, I would have thought there would have been tons of clearance to fold properly.
the LPC receiver must be slightly wider than an AR?
 
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