Crosman DPMS SBR , Bushmaster MPW , A4-P , R1 Review / Comparison

[@grahampitchy8691]

Crossman DPMS SBR is getting to be a legend in it's own right. It's the feel and realistic of it's solid construction that makes it so comfortable.. I have one and I cannot put the thing down. It has a lovely feeling to it that makes you not want to put it down.

[@RWMAirgunsmithing]

So true xD it's the "toy" I wish existed when I was a kid lol

[@Karl_Kampfwagen]

The "gun" portion is entirely the magazine, as I've noticed. Thus, all the guns shoot the same with stock mags. The barrel barely matters, the hammer barely matters, and the whole system has been maximized for Rds/min already. Crosman did a great job, and I'm happy with the A4-P Full Auto. Very impressed with the build quality

[@RWMAirgunsmithing]

@@Karl_Kampfwagen I see you are a man with great tastes hehe xD

[@andrewmiller9265]

I appreciate the fact you resisted making another redundant 'accessorized video as you mentioned

[@RWMAirgunsmithing]

Hey thanks xD trying to stand out ;) not really in it for the clicks, mainly want to put just info out there.

[@a5teroth]

I'm so close to buying the R1. They look so much fun.

[@RWMAirgunsmithing]

Doooo iiiit! xD best AR replica out there with the most 1:1 functions.

[@44tuber44]

If you get a chance to try the Crosman AK1 you'll find that the trigger is SIGNIFICANTLY better - very light and crisp.

[@RWMAirgunsmithing]

nice, good to know. I've been eyeballing the ak, but I also want an UZI , but need a cowboy lever action! (not to mention I have an itch to buy a refurbished R1 just to have that extra barrel and extra AR parts lol)

[@44tuber44]

@@RWMAirgunsmithing can confirm that the cowboy is a lot of fun. Definitely buy extra shells, they have a way of bouncing underneath things and into corners where I can't find them again haha

[@RWMAirgunsmithing]

@@44tuber44 umarex cowboy lever is purchased! got at least 150+ rounds out of the first 2 co2, gonna caliper the pellet shells vs the bb shells : this airgun is freakin amazing xD edit : i have like 60 pellet shells and the 10 bb shells from the cowbow lever

[@RWMAirgunsmithing]

@@44tuber44 dude!!! You didn't tell me this thing shoots quarter sized groups on full auto! (Just watched a few reviews). Definitely gonna order one now and pretend the insides are not fake lol xD.

[@44tuber44]

@@RWMAirgunsmithingif you want the tightest groupings on full auto (or semi auto for that matter), I strongly recommend the Umarex Legends M1A1. The trigger is a little crunchy and springy, but it is an absolute tack driver. It's fun because it's the most basic peep sight, but it's so well constructed. The full auto also has a much higher rate of fire (cyclic rate, not velocity) than any of the other full autos on the market.

[@KiLLJOY1056]

Can you please do a thorough video on the A4P Barrel Tape Mod to get it to stay in with or without that little silver tip, so i can put my own custom barrel extension on it. Please!!! Also, what differs from the A4p and the R1 why the barrel stays in the R1 but not in the A4p? I thought they were the same build

[@RWMAirgunsmithing]

I have all the clips ready for a barrel swap video, just have to find time to edit it .. sigh lol. On the R1 the inner barrel retaining thingy is captured on the inside of the the black barrel shroud, the muzzle device can be removed no problem. On the a4p the inner barrel is longer than the handrail, so it sticks out through the end of the barrel shroud and is actually held in place with the muzzle device.

[@RWMAirgunsmithing]

I would try using an oring kit, find an oring that gives a nice snug/secure fit inside the muzzle device. There are ways to secure the barrel inside the "chamber" so it doesn't slip out (using an oring) it will be in my barrel swap video

[@johnnybbgunner2136]

The MPW and R1 have butt stocks that can be swapped out on the mil spec tube. So cool to train with at home.

[@RWMAirgunsmithing]

Yes indeed! I tried to make one big video about everything but after 3 or 4 takes I realized there is too much to talk about. I promise I am constantly thinking about how to share my thousands of bb plinking experience with you guys. edit : In case you were wondering why my part 1 and part 2 are so different xD

[@joebless66]

Cool video. Appreciate the helpful information.

[@RWMAirgunsmithing]

More to come! thx for the props xD

[@joebless66]

I have the Crossman DPMS, the R1, and the AK1. After watching your video I now feel inspired to share my thoughts and hope to make a video with my review. In the meantime I look forward to seeing more of your videos.

[@RWMAirgunsmithing]

@@joebless66 noice, lemme know how it goes ... just be careful, once you start you cant stop and then you have 2 dozen airguns and 10k$ spent xD

[@johnnybbgunner2136]

You can also swap out the uppers and lowers between rifles. I get bored and start tearing into them.

[@RWMAirgunsmithing]

Hell yeah! xD Man you are spoiling all my ideas for future videos hehe. I replied to your other comments, but yeah, swapping uppers and lowers is loads of fun! I do have some warnings I will share for the extremely motivated plinkers who might not be mechanic savvy or maybe just bought everything and really want to swap and tinker. (ie: I would recommend NOT swapping anything from a DPMS to/with a bushmaster/R1/ or ap4.... stay tune for why ;)

[@kevinbosworth3]

Can u do a strip down of the firing group please much appreciated thanks

[@jayfrancese3963]

Do you have a trigger removal video my trigger has malfunctioned and I have another one in a different lower and I would like to change it

[@RWMAirgunsmithing]

Definitely on the list, I have already located all the pins and kinda guessed where I would need placeholders for reassembly but, TBH, I was waiting to get a malfunction myself to actually tinker with it hehe. Long term I want to take one apart and polish all the parts, see what kind of action is achievable.

[@RWMAirgunsmithing]

My full breakdown and reassembly videos are done! The fcg is not taken apart but you can see all the process for the fcg.

[@EberhardvonK]

Does anybody knows if it is possible to replace buttstock in DPMS SBR please?

[@RWMAirgunsmithing]

Yes, my next upload will be about the stock and buffer tubes! coming soon!

[@Unknown_Artist_CK]

The longer barrel should have higher power if other settings are the same. Have u ever tried changed the lower receiver of A4-P to R1?

[@RWMAirgunsmithing]

Yes, there is a difference between the two, the POI is definitely lower on the A4-P the farther you move back. The A4-P is accurate but you will get more range with the R1 barrel.

[@Unknown_Artist_CK]

@@RWMAirgunsmithing The hammer spring on A4-P is likely to be stronger than R1. I suppose that’s the way to compensate the FPS decrease caused by shorter barrel. Maybe swap the hammer spring between them could make some differences?

[@RWMAirgunsmithing]

@@Unknown_Artist_CK actually these guys have a sear kinda like a striker fire and the internals are all identical. All the power for these airguns comes from the magazine. I would say at 45 feet the A4-P shoots maybe 6 inches lower but it is still accurate.

[@Unknown_Artist_CK]

@@RWMAirgunsmithing Then it seems that the gas has already lose power? I watched another video, and the author sealed the “bleeding holes” (for blow back and “striker” charging) on the magazine for higher power. The R1 becomes bolt action lol, but more than 700fps…And he found that when FPS is greater than 430 or so, the “striker” fails. So he created the strengthen “striker”. This guy also created electronic settings to automatically charge the “striker” to make it semi-/full auto Very impressive moding

[@RWMAirgunsmithing]

@@Unknown_Artist_CK I think you are talking about rumblecanada, he really has pushed this platform to the limits! xD

[@HiCZoK]

I got myself an st1 and the mag jammed on the 2nd day. There is no tutorial anywhere how to open the mag so I will have to return it. Looking at what else to get! a4p is cheapest and fallen patriot r1 the coolest. I would've gotten mp40 or m1a1 replicas from umarex but the crosman dpms/st1/r1 have better accuracy and power in single mode I think. and I like RAILS

[@joeytramley62]

Great informative video. Thanks

[@RWMAirgunsmithing]

More to come!

[@Reviewerhn]

The A4P I know its a very short version of it's brothers, but it appears to my eyes to be smaller too? Or is it just a shorter barrel and lack of a Stock? So if I add a.stock I should be able to shoulder it and feel just like shouldering an R1?(Shorter barrel obviously)

[@RWMAirgunsmithing]

Ya, mechanical-wise the uppers and lowers up to the handguard are all the same on all the models including the buffer tube underneath the different Crosman stocks/brace. The only difference on the a4-p is the 6inch inner barrel vs the 9inch on the other models.

[@RWMAirgunsmithing]

I guess I should mention the buffer tube on the A4-P is not painted, so you might want to keep that in mind (small paint job). Edit : and you won't notice the 6inch barrel unless you try and push past 50-60feet

[@Reviewerhn]

@@RWMAirgunsmithing thank you very much for taking your time to answer and share your applied knowledge with a newbie. In my country we only have the A4P available for purchase, however I think a Buckrail AR type stock could Fit the A4P, that would Solve my problem.

[@RWMAirgunsmithing]

@@Reviewerhn glad to help out, if the stock you are buying is mil-spec then it will fit. It might wobble a bit till you paint it. Edit : paint the buffer tube to eliminate wobble.. sorry my sentence structure was off lol

[@Reviewerhn]

@@RWMAirgunsmithing it Is mil-spec! Thank you very much!

[@l3ad3d]

A question.. Would you say 30 yards is the max distance for target shooting with these? Whats the furthest distance you have practiced out too. Thanks.

[@RWMAirgunsmithing]

ooooff, I've never done 30 yards with an airgun at all xD (like 15 out of 16 of my airguns are co2 replicas) . I've pushed my M17 with alloy pellets to 65ish feet on a 10x10 pellet trap but thats it. Had a backstore at the old shop when I had just got this guy and could plink a 10x10 pellet trap at 55 ish feet. Cant remember the groupings, didnt have enough experience back then to actually analyze my plinking results lol Go check out RumbleCanada here on youtube, he has crazy mods that you would want if you try to push this guy to 30 yards. Not entirely sure how good the ballistics will be with a steel bb at those speeds and ranges, might be something to consider, GL!

[@RWMAirgunsmithing]

Maybe as a sidenote, these are not really target shooters even though they shoot amazing groups. But the accuracy allows for realistic training (compared to some replicas that have weird mechanisms or bad POI). I currently shoot in a maximum 45 ft basement range, and this guy is a beast, I practice with a shot timer and everything (like Jerry LOL)

[@l3ad3d]

@@RWMAirgunsmithing thanks man for the info. I have an 80ft range just haven't got around to shooting its been too cold. I though of an actual mod for the r1/mpw/a4p/sbr. Take a 1/2" to 1 1/8" piece of 3/4" id (1.050" od) pvc pipe. Length depends on how much you want to short stroke. Place pvc between buffer and bolt. My thoughts are telling me it's going to A. Fire faster B. Give more fps C. Both A&B or D. Blow the seal. Think this will work?

[@l3ad3d]

@@RWMAirgunsmithing there's more to the part!! The id of the pvc tube might have to be increased a bit.

[@RWMAirgunsmithing]

@@l3ad3d I think you just need a couple of washers to see a noticeable increase (RumbleCanada has exactly that mod on his channel) to the point that it might damage your internals. Dont forget that bolt has to cycle back enough to cock the "firing pin". So yes it will work but it might break the airgun and you will have to pull the charging handle each time. I'd suggest start with 1 washer and see what happens hehe.

[@YoungYoda666]

Can you put a LPVO optic on the R1?

[@YoungYoda666]

And if so how do you put it on? And what’s the right scope to use Pls😭

[@RWMAirgunsmithing]

@@YoungYoda666 oh yeah for sure! I would recommend an airsoft scope if you dont wanna break the bank. And you dont need to go overboard on magnification, x1-4 is plenty for the range these airguns shoot. And you probably will want to pick one that already comes with a mount. As for installing, you should follow the same procedure as for a real firearm. (Vortex nation has awesome videos and there are plenty others on KZbin)

[@RWMAirgunsmithing]

If you check out my performance proof video you can see the aimsport lpvo I have on mine.

[@YoungYoda666]

@RWMAirgunsmithing thank you so much bro I will definitely check them out I’ve been wanting to add stuff to mine just for the looks and for the fun since I can’t really own a real gun yet Practicing with an air gun might be the closest way I can practice to using a real gun Thanks brother I’ll make sure to check them‼️🙏

[@RWMAirgunsmithing]

@@YoungYoda666 Smart decision, I totally agree with your choice to get whatever training you can before pointing around a real firearm xD. And these airguns are the best AR replicas on the market in terms of operations. Guaranteed you will feel 100% more confident when you finally hit the range with your real firearm. I pretty much used airgun replicas (being from Canada) to practice safety checking and getting familiar with the functions. Any practice with the crosman will translate to the real deal. (Edit : just dont let the mags drop to the ground when you practice reloads lol)

[@817.DEADLINE]

can u take off the muzzle on the A4P

[@RWMAirgunsmithing]

Yes, its 14mm counterclockwise (so CW to unscrew), I cover it a little in my upper receiver full breakdown.

[@MtvSamurai]

What about power? Any difference?

[@RWMAirgunsmithing]

Neg, as I mentioned in the video they all work off the same magazine, the only ballistics or accuracy differences you might experience will be from the difference between the 6 inch and the 9 inch barrel. Even the a4-p with a 6 inch barrel plinks perfect out to 40-45 ft with a decent red dot, so the R1, dpms and bushmaster can push a bit farther than the a4-p.

[@corksocker7727]

liked your vid. you decock an AR by pulling the trigger though. we used buckets of sand in the army. that way when you "decock". its not going to hurt someone when some goober does an oopsie.

[@RWMAirgunsmithing]

So true, I failed to go through the details of it. At my plinking range I always keep it pointed towards the "berm" (as Jerry would put it xD).

[@shaneschannel2081]

Hi I'm in UK I've got crosman r1 semi auto bb could I put silencer on does it unscrew and also how do you grease inside of gun Shane uk

[@RWMAirgunsmithing]

Yep, 14mm counter clockwise, they all have the same thread. You can apply a drop of silicone on any green seal like in the instruction manual and other videos, dont over do it. Keep it clean and wipe down moving parts with a soft cloth and silicone oil just to see a shine, technically can go through 1000s of bbs between maintenance.

[@RWMAirgunsmithing]

Made a video with my own full maintenance guide, part 1 of the reassembly uploads.

[@vahagashikyan7861]

Hello my favorite KZbinr , Please can u do a video about Crosman Ak1

[@RWMAirgunsmithing]

Lol, I wasn't planning on getting one but seeing as you are so nice I might have to reconsider and just get one for the collection xD

[@RWMAirgunsmithing]

I bought one and it shoots great! It is not a perfect 1:1 replica mechanically like the AR models but it shoots better groups on full auto.

[@meanmike6169]

Informative

[@cvpcvp3663]

They are very realistic and nice but I have always had problems

[@RWMAirgunsmithing]

What are the problems? I would gladly help out if I can! Edit : give me all the details, I'll try and figure it out

[@cvpcvp3663]

Magazine stuck in the gun with my ak1 and Ap4

[@RWMAirgunsmithing]

@@cvpcvp3663 You took both of them out of the box, put the magazines in and now cannot pull them out while the magazine release button is pressed? I've seen some reviewers struggle with the AK but the a4p should come out with a solid tug. They aren't exactly drop free.

[@cvpcvp3663]

I put some bbs in it and nothing came out and tried taking the magazine out and it is stuck

[@RWMAirgunsmithing]

@@cvpcvp3663 if you don't see any jammed bbs through the dust cover on the A4-P the only thing holding it in is friction. I have an ak1 in the mail, ill see what it looks like.

[@johnnybbgunner2136]

Size matters!

[@RWMAirgunsmithing]

No doubt! xD unfortunately there is no caliber besides .177 for these guys hehe

[@johnnybbgunner2136]

Magpul furniture on my rifles.

[@RWMAirgunsmithing]

Stay tuned, I have 1000's of $ (canadian$) of accessories and am planning to blow your socks off ;)

[@johnnybbgunner2136]

With the world becoming a more scary place…continued training with these rifles is even more fun prepping. I continue to stock up on real ammunition and other supplies just in case.😎

[@RWMAirgunsmithing]

@@johnnybbgunner2136 hehe, FULL DISCLAIMER, I am from Québec xD No stockpiling here! (I pay to store my only pistol at the gun club) I still grew up making lifesize GIJOE replica LEGO guns when I was a kid late 80s early 90s lol edit : but yeah, plinking cans is nice, but might as well get better at it xD

[@richardfincher8304]

I too use only Magpul furniture on my A4P

[@angelsdevils2956]

😃

[@ilijabosnjak76]

Shyt I forgot about R1...

[@RWMAirgunsmithing]

xD a great addition to the family, I would definitely recommend the R1 as a first purchase

[@stevenirwin473]

I'm looking for a replacement bolt catch release, any leads????

[@RWMAirgunsmithing]

Neg, sorry, i have only seen skinny metal impact absorbing thingy on crosman's site. I have seen in forums that some are claiming crosman is about to begin selling all the parts individually. Fingers crossed, i have a broken bolt catch as well.

[@RWMAirgunsmithing]

I have also seen in forums talk about people tinkering their own bolt catch (I'm lazy and just bought 5 crosmans lol). It doesn't need to look good, it only needs to catch the bolt carrier and not scratch or marr or impede proper cycling.