Follow up to Bushmaster mpw customization.... DO NOT DO THIS 

I know I'm late but the second hole is for the spring and detent for the rear take down pin. This is what is known as a captured takedown pin. The front takedown pin (the pivot pin) doesn't have one (a detent) therefore it pulls out completely. This shouldn't affect the gun firing. If you pulled out the spring and detent all it would do is allow the rear takedown pin to pull out completely just like the front one.

Just put a Magpul K2 grip on my MPW and it works great. Look at your original grip with a magnifying glass and you'll see the hole is countersunk. Just widen the hole on your replacement grip a few millimeters deep. The rear spring doesn't need a hole, just make sure the spring goes in straight when putting the grip on. As others have said, the rear spring is for the rear takedown pin so it doesn't fall out. Good luck!

I had just purchased this BB gun. Thanks for explaining what accessories I could and could not upgrade to. This helps out a lot thank you

thank you for saving me so much time!! I'm customizing and upgrading mine. Just for looks not function. Great advice and video!

I modified all four of my rifles and they all fire perfect. Great video.

The grip is the only thing I would not change. I like the A2 style grip.

I put a aftermarket AR grip on my DPMS only thing I had to do was drill the hole for the spring and it was fine

I've got a Wilson Combat Starburst grip on my dpms,awesome.The other spring keeps the rear takedown pin captive.

I actually did the grip mod on my sbr..too bad it didn't work on your mpw..ive shot nearly 8,000 BBs with the new grip with out issues..love the video

I have the that same grip on my Bushmaster and A4-P, the UTG Sniper Pistol Grip. I had to make the first hole deeper and obviously make a second hole. What I needed to do though, is clip off about four coils on the first spring, that way it sits the exact same depth as it does with the stock grip. But like you said, my A4-P in semi, I had to pull the charging handle back every other shot. Not sure why this was happening, but as soon as I clipped off the four-five coils and reinstalled, works fine on both models. Must be something about the first spring needing to sit exactly at the same depth. I would recommend if anybody is reading this, if you install a grip and notice the selector switch is stiff or hard to turn, take the grip back off and make sure the two springs aren't crunched up and sitting exactly how they were with the stock grip. And you might need to do what I did i.e. clipping some coils off.

That rear unknown spring is for the stopper for the rear springs to keep firing. So fill that hole and start over. Simple to do

Just full in the second hole. And make sure the bolt or screw that holds the grip on protrudes the same and the stock one. The plastic on the aftermarket one is slightly thinner than the stock one. Put a couple washers on the screw to space it correctly. It will work fine.

Great video and thank you for the warning. I fully customized My real steel m4 but was hesitant to change the pistol grip on my r1. Looks like that secondary detent spring basically has to do with the rear takedown pin.

I used Magpul furniture on my rifles and they work great after drilling out the second spring hole. The issue is the grip does not fit the curvature of the lower.

On my AR the smaller second spring is the spring for the buffer tube detent pin.

That stock I love it found it watching now brother

Rear spring is for the rear take down pin I believe

Just a take down pin spring. If you want to use a real ar15 handgrip like magpul. Then you need to use a real detent pin and spring as well for your safety selector. No modifications needed

Hey I just change my handle everything you did was good just the second hole didn’t need to be drilled I have a video I’m going to upload shortly

Impatiently waiting to see the dpms

Did you try filling the second bored hole and try it out?

Good video. I have the same gun and I love it :)

Yo guys I just found out the Hellboy Barrel cover can also fit the DPMS and the R1 and it Looks Awsome as Hell

Put a few washers on the philip head bolt and it will work fine

The second spring is to keep the rear pin from coming all the way out

Mine works just fine. Swapped a DD stock and grip.

I'm not a gunsmith but I was thinking.. maybe the depth of the hole that you made for the first spring might have to be precise depth.. just a thought.. I feel like that could be your issue?

I wish they would add MLOK for my Olight weapon light. I do not like using cable ties.

I have that grip on my tipman recon

Hi there enjoyed your video, I live in the uk and have a dpms sbr and i want to make it fully auto and idea on how to modify it? Look forward to hearing from you

It has to to with the detent for the takedown pin.

Can I use different AR charging handles for this bb gun? thanks.

So I have a question for you is th phoney suppressor removable like on the SBR that's the only thing that would be a deal-breaker for me really

Can you PLEASE tell me where you got your pistol grip magwell end cap cover thing?

i want one! subscribed

Maybe this is the place to address my problem. I bought mine brand new i dont know of any modifications you can do to the gun i would love to know if there are any mods to make it preform better. Its on the weaker side. But my problem is that this happens to my stock gun. After the first 3 mags semi auto stops working. Its like it loses power to throw the bolt back. Just like he explained in this video.

Drill the hole in the grip deeper and you have to ream the top a bit wider so there is little pressure on the spring. I have a Magpul MOE+ on my SBR and works flawlessly. postimg.cc/DSn6qRCt

You convinced me to buy one!

do you have any explanation for why my charging handle is loose it will not chamber like it used too, also i have the same gun experiencing this issue.

A friend of mine informed me that the purpose of the second spring is to allow the gun to function properly in semi-auto. Oh, my friend's name? Captain Joe Obvious. 😜 And thanks for suffering through this so we ( your viewers) won't have to. 👍🏽

My wont fire anymore. The pull back is lock. How do i unlock it. Jam. Please help

I still can't figure out what the correlation is between putting that grip on, and it not firing properly. And I also can't figure out what compelled you to "bore out" the second hole, when the orig airgun grip didn't have a hole at all.

Thank you ,Gunslinger3759 Where & when did you pick Up the Bushmaster MPW for $169.00 ? After seeing your video & subscribing I WANT ONE TO BUY ONE ! I'm assuming thats without free shipping ? By the way , VERY NICELY ACCESSORIZED ALSO ! I'm also interested in the DPMS SBR fron Crossman. Whats your opinion , and which do you PREFER ? Great video ! , and Thanks in advance 🏁

Interesting... I have similar problems with my brand new DPMS, but with stock handle and no tinkering with inner bits of the gun. Sometimes, when in single shot mode, it fires in short burst. After that I have to cock it manually in order to shot again. Frustrating this. Any ideas what may be the culprit?

You didnt let us know.if the new stock solved the looseness on the buffer tube.

Just stripped mine to clean/lubricate, but when I put bolt and everything back together the bolt won’t pull back properly...

Has anyone had the safety selector get stuck in one position? If so, what's the fix? Thanks.

Can you do a vid for the maintenance?

Recommendations for laser dot sight or front grip? Would a corded laser sight be more appropriate or simple push button?

I put a Magpul grip on mine, and it was the same, I had to drill out the hole for the safety spring. but if you look closely on the original grip the hole is even bigger at the top, so I also made the top of the hole bigger, and that fixed my safety. I also noticed the bolt that secures the grip, went further inn, and actually bottomed out against the gun. Luckily I noticed, and put a couple of washers on the bolt so it wouldn't hit. I never fired the gun before I installed the washers, but I would not be surprised if it would affect performance having a bolt adding pressure to the mechanism inside.

Have you put a laser sight on yours ? How do you like it ? Accurate ? :)

Grip tape and such like dont work so well when grip angle is what your trying to change.

Have you found an aftermarket customized suppressor? I’m currently waiting for mine to be delivered on Tuesday and am ordering all my customized products from Amazon. I have 2 questions which have prevented me from “finalizing and processing the order.” Current;y I have the deep earth brown rubber magazine sleeves, the deep earth brown rubber hex pattern grip cover, deep earth brown bipod which is nice. HCosting me $119 but sale price is $98 and I’m saving $100 simply for becoming an Amazon Prime member. Anyway, also ordering really nice targeting electronics, red dot, laser, tactical LED flashlight, etc. I’ve noticed that Deep Earth Brown seems to vary from manufacturer to manufacturer. It’s taken me hours to hunt down the caramel color I like the most and most closely matches the Bushmaster itself, and have been successful at directly matching the Magpul 2 Riflemans Loop two point sling, the Magpul Rifle Bipod, the Aecktech M4/M16 Magzine Protecto Rubber. So far, so good. But this here is where I need help. I need to deal with what are arguably the most important custom components and yet I’ve seen nothing online addressing these questions. First, the buffer tube is capable of accepting both the MS-SPEC (1.148”) and the COM-SPEC (1.168’). Obviously to make it more customizable with more options however, in doing this any buffer tube would at the smallest need to be 1.146”, which would mean that there would be the type of wiggle room and shakiness in a butstock with commercial specifications as a result of the 2 tenths of an inch required, that it would bug the hell out of me. So my first question is do you have a military or commercial spec but stock. I’m assuming that if you’re spending money to customize your stock that you’re switching out the original with one that’s got a more solid and tight, less shaky fit? If so, did you replace the original with an aluminum or a polymer? Would the aluminum ones make it too heavy or unbalanced? Would a MIL-SPEC but stock be supported by the guns polymer platform? If you have an aftermarket stock that tightly and securely fits the Crosman buffer tube? Second question, why am I not seeing anyone with an aftermarket mock suppressor. The one that comes with the gun is it’s one component that just looks horribly designed, a dead giveaway that it’s not an actual Bushmaster. My opinions aside, has anyone found an extended barrel, muzzle break that fits it, or is their no way to switch it out? I’m assuming that if it were threaded and was interchangeable with other barrels and realistic suppressors? Thank you for your time and any suggestions you might have.

Where did you get that stock

is this a good gun to just have and shoot cans with?

where did you get mag end cap

do you play airsoft with this gun or what do you use it for?

Can you take that front fake suppressor off

Is it possible to make foldible butt?

Are you sure it wasn't because the co² got too cold?