DD or BCM LPK

[84wh1]

Hey guys,

Im building a CC rifle with an IUR upper and a CC lower. I am debating between using either the DD lower parts kit or the BCM one. The BCM is about 75$ more but comes with a few upgraded parts (trigger and grip) that the DD doesnt come with.

Anyone have any input on either of these 2 LPK's?

 

[Phat Eagle]

Both are top quality. Get the BCM if you think the upgraded grip is worth the coin.

 

[FoxAlpha]

An LPK is the same damn thing across the board with the expception of additional parts like the BCM trigger and the BCM grip you're mentioning.
Personally, I prefer to buy the gun builder kits (doesn't include the grip or trigger) for around 60 bucks (Arms east sells ALG kits) and allows me to buy whatever grip and trigger I want without wasting money on crappy parts like a mil spec trigger and an A2 grip.

From my experience, the bcm grips are great but their trigger is nothing to write home about. Found it to be a fair bit below an ALG ACT trigger and just slightly better than a decent mil spec trigger.

 

[84wh1]

An LPK is the same damn thing across the board with the expception of additional parts like the BCM trigger and the BCM grip you're mentioning.
Personally, I prefer to buy the gun builder kits (doesn't include the grip or trigger) for around 60 bucks (Arms east sells ALG kits) and allows me to buy whatever grip and trigger I want without wasting money on crappy parts like a mil spec trigger and an A2 grip.

From my experience, the bcm grips are great but their trigger is nothing to write home about. Found it to be a fair bit below an ALG ACT trigger and just slightly better than a decent mil spec trigger.

Yeah ive thought about buying the ALG kit without trigger and grip, but once you factor in shipping plus the purchase of a seperate trigger and grip, the price begins to rise dramatically.

I guess i should have specified that im not really looking into getting an expensive after market trigger (IE Giesslie, Trigger tech etc).....the BCM PNT trigger is more of a bonus I guess. I just wasnt sure if it was good enough that it merits the added cost over the DD LPK

 

[Trinimon]

An LPK is the same damn thing across the board with the expception of additional parts like the BCM trigger and the BCM grip you're mentioning.
Personally, I prefer to buy the gun builder kits (doesn't include the grip or trigger) for around 60 bucks (Arms east sells ALG kits) and allows me to buy whatever grip and trigger I want without wasting money on crappy parts like a mil spec trigger and an A2 grip.

From my experience, the bcm grips are great but their trigger is nothing to write home about. Found it to be a fair bit below an ALG ACT trigger and just slightly better than a decent mil spec trigger.

^^ This. Unless you don't care about a heavy mil-spec trigger.

 

[rkm456]

Fwiw, I've been told from a reputable source that what is in a DD lpk is also what's in a Colt Canada lpk.

 

[Sinasta]

Installed a BCM PNT LPK on my friends CC lower. The extra coating on the hammer made it difficult to install and the hammer fall was quite slower than a regular trigger. I dont think hes shot it yet to see if it will cause light primer strikes.

 

[sky52]

Installed a BCM PNT LPK on my friends CC lower. The extra coating on the hammer made it difficult to install and the hammer fall was quite slower than a regular trigger. I dont think hes shot it yet to see if it will cause light primer strikes.

that is entirely untrue....the coating lessen the friction when the hammer falls, if anything it actually helps with lock time. i currently have the PNT on my .22 conversion .To be honest, i have both ALG and the PNT trigger and i couldn't tell the difference between the two. Go with whatever that is available.

 

[WRH]

Hey guys,

Im building a CC rifle with an IUR upper and a CC lower. I am debating between using either the DD lower parts kit or the BCM one. The BCM is about 75$ more but comes with a few upgraded parts (trigger and grip) that the DD doesnt come with.

Anyone have any input on either of these 2 LPK's?

The BCM grips are awesome and one will run you about $50 last I checked. So is a possibly better than mil spec trigger worth $25 to you? I'd lean that way if I were you, but I'm not a trigger snob luckily.

 

[Sinasta]

that is entirely untrue....the coating lessen the friction when the hammer falls, if anything it actually helps with lock time. i currently have the PNT on my .22 conversion .To be honest, i have both ALG and the PNT trigger and i couldn't tell the difference between the two. Go with whatever that is available.

Yes I lied and my statement is untrue. Are you that dense? I'm telling you from my experience. There are such things called tolerance stack you dolt.

 

[blaxsun]

Fwiw, I've been told from a reputable source that what is in a DD lpk is also what's in a Colt Canada lpk.

Most LPKs are comparable (just stay away from the Chinese crap). If you plan to upgrade the trigger, pins and selectors just go with the cheapest LPK. Otherwise, whatever offers you the best deal in terms of upgraded triggers and non-A2 grips is your best bet.

The BCM grips are awesome and one will run you about $50 last I checked. So is a possibly better than mil spec trigger worth $25 to you? I'd lean that way if I were you, but I'm not a trigger snob luckily.

I am a trigger snob - but only because I've learned to appreciate the upgraded 2-stage ones...

 

[Waynetheman]

How did the coating make it harder to install? Literally fell in place.

Also I got my bcm kit at $149 so it was way worth the price at that point.

 

[FoxAlpha]

Yeah ive thought about buying the ALG kit without trigger and grip, but once you factor in shipping plus the purchase of a seperate trigger and grip, the price begins to rise dramatically.

I guess i should have specified that im not really looking into getting an expensive after market trigger (IE Giesslie, Trigger tech etc).....the BCM PNT trigger is more of a bonus I guess. I just wasnt sure if it was good enough that it merits the added cost over the DD LPK

That's an aspect I hadn't thought of, I'm lucky enough to have many local gun shops near me so shipping isn't always something I have to consider. If that's the case, you're probably best suited to getting the BCM kit, that way you'll save 20-30 bucks in shipping and you'll get a solid kit to build off of.

 

[cr5]

I put a DD LPK in a lower I built a year or two ago and hated the gritty crappy trigger, about a month later I bought an ALG ACT nickel boron coated trigger and am very happy with it. It's a single stage by the way just so you know.

 

[Kidd X]

Both are top quality. Get the BCM if you think the upgraded grip is worth the coin.

Absolutely correct, either will serve you well.

An LPK is the same damn thing across the board with the expception of additional parts like the BCM trigger and the BCM grip you're mentioning.
Personally, I prefer to buy the gun builder kits (doesn't include the grip or trigger) for around 60 bucks (Arms east sells ALG kits) and allows me to buy whatever grip and trigger I want without wasting money on crappy parts like a mil spec trigger and an A2 grip.

From my experience, the bcm grips are great but their trigger is nothing to write home about. Found it to be a fair bit below an ALG ACT trigger and just slightly better than a decent mil spec trigger.

No they are not all the same. Some companies actually care about specs tolerances and materials when they source their fire control parts. DD, Colt, BCM, LMT, and some other well known brands use milspec parts from REPUTABLE sources. Hobby guns and import junk do not.. A milspec trigger is a known entity whereas some of the aftermarket triggers are poorly designed or simply not worth the coin. If reliability is your concern then stick with milspec or at least stick with a non adjustable trigger.

Fwiw, I've been told from a reputable source that what is in a DD lpk is also what's in a Colt Canada lpk.

Quality brands source their parts from the same reputable suppliers.

that is entirely untrue....the coating lessen the friction when the hammer falls, if anything it actually helps with lock time. i currently have the PNT on my .22 conversion .To be honest, i have both ALG and the PNT trigger and i couldn't tell the difference between the two. Go with whatever that is available.

Me experience as well with both triggers, not enough difference to notice.

Yes I lied and my statement is untrue. Are you that dense? I'm telling you from my experience. There are such things called tolerance stack you dolt.

Liar or not your experience doesn't match the components and data involved. BCM doesn't tolerance stack or offer sub par junk like NEA or others.

Most LPKs are comparable (just stay away from the Chinese crap). If you plan to upgrade the trigger, pins and selectors just go with the cheapest LPK. Otherwise, whatever offers you the best deal in terms of upgraded triggers and non-A2 grips is your best bet.


I am a trigger snob - but only because I've learned to appreciate the upgraded 2-stage ones...

Again, LPK's are not all the same, in fact far from it. Use quality parts from a known reputable brand or risk the consequences of out of spec parts. As for triggers, a 2 stage trigger is great for precision work but is not ideal for action shooting or rapid firing.

 

[blaxsun]

Again, LPK's are not all the same, in fact far from it. Use quality parts from a known reputable brand or risk the consequences of out of spec parts. As for triggers, a 2 stage trigger is great for precision work but is not ideal for action shooting or rapid firing.

Most (hence my comment) of the main AR15 manufacturers use similar quality components in their LPKs. Geissele (and others) make a lot of 2-stage triggers for competition, so this is news to me...

 

[FoxAlpha]

Absolutely correct, either will serve you well.



No they are not all the same. Some companies actually care about specs tolerances and materials when they source their fire control parts. DD, Colt, BCM, LMT, and some other well known brands use milspec parts from REPUTABLE sources. Hobby guns and import junk do not.. A milspec trigger is a known entity whereas some of the aftermarket triggers are poorly designed or simply not worth the coin. If reliability is your concern then stick with milspec or at least stick with a non adjustable trigger.

I will agree with you on this, sometimes I get a little ahead of myself and just assume since the comparison was between bcm and DD that we were all on the same page as per only using quality, reputable manufacturers. I never have, nor ever will condone the use of sub par equipment.

Again, LPK's are not all the same, in fact far from it. Use quality parts from a known reputable brand or risk the consequences of out of spec parts. As for triggers, a 2 stage trigger is great for precision work but is not ideal for action shooting or rapid firing.

This however I will strongly disagree with you on, most if not every competition, rapid or action shooter I have ever met or even witnessed on the interwebs is using a 2 stage trigger.
I myself prefer the geissele SD-C and Geissele Super T 2 stage triggers in my 2 go-to rifles.

In fact, I have a feeling you've mixed this up as most high precision bolt guns I've ever used have a very light single stage trigger.

 

[FoxAlpha]

Liar or not your experience doesn't match the components and data involved. BCM doesn't tolerance stack or offer sub par junk like NEA or others.

Just going to point out another flaw here. Every manufacturer encounters tolerance stacking, period.
Just to explain, let's say BCM allows tolerance of .01" (just for arguements sake) on all their various parts. If the trigger pins supplied are .01" larger than milspec standard, and your trigger pin holes are manufactured .01" smaller, both parts are within the manufacturers set tolerances, but combined you now have .02" of excess material which is known as tolerance stacking.

This exists in everything from NEA manufactured firearms parts to NASA aerospace engineered parts on the ISS (although I'm sure one has a few more 0's)

 

[dangertree]

No they are not all the same. Some companies actually care about specs tolerances and materials when they source their fire control parts. DD, Colt, BCM, LMT, and some other well known brands use milspec parts from REPUTABLE sources. Hobby guns and import junk do not.. A milspec trigger is a known entity whereas some of the aftermarket triggers are poorly designed or simply not worth the coin. If reliability is your concern then stick with milspec or at least stick with a non adjustable trigger.

Liar or not your experience doesn't match the components and data involved. BCM doesn't tolerance stack or offer sub par junk like NEA or others.

Again, LPK's are not all the same, in fact far from it. Use quality parts from a known reputable brand or risk the consequences of out of spec parts. As for triggers, a 2 stage trigger is great for precision work but is not ideal for action shooting or rapid firing.

There is a fair bit of ??? in this response.

What I will agree with is that there are of crap LPKs out there. Mostly from unknown brands who purchase others rejects.

A: You don't understand what 'tolerance stacking' means. Saying a company 'doesn't tolerance stack' confirms this. FoxAlpha has already explained it.

B: Your comment on 2-stage AR15 triggers for is simply the opposite of reality. With a much shorter reset and 1/3 the lock time of a milspec trigger, plus lower release weight on that short reset second stage, Geissele 2-stage triggers are VASTLY faster than a milspec trigger and are a distinct advantage in rapid or action shooting. Geissele hybrid 3-gun triggers are faster again. They are absolutely ideal for action shooting and rapid fire, which is why so many winning shooters use them, and why youtube is full of vids of GA 2-stage and Hybrid mag dumps and speed tests.

 

[sky52]

Cant fix stupid and dont argue with a bag of wet @$$hole , he will just drag you down to his level and kick your @$$ with experience. Funny enough, i cant fathom how a bag of wet a$$hole can retain memories and experience