In this Preview Unboxing Video I Take a look at 4 new Airsoft products from Arcturus all of them being AEG Airsoft Rifles with two based on the AK platform and the other two based on the AR platform. Three of the AEG Airsoft Rifles are mostly metal while I also feature a lower cost version with a Nylon Fiber Polymer receiver. All of these Replica AEG Airsoft Rifles are very good quality but you will get all metal (mostly steel and aluminum) build and a Hi-Cap and Mid-Cap magazine with the higher cost versions.
In this Field Test Shooting Review I only test out the KWA LM4 RIS PTR GBB Airsoft Rifle since both the RIS and KR7 are virtually identical in terms of their build and internal components, the KR7 has a a slightly shorter barrel but both KWA Airsoft AR M4 Rifles should perform very similarly.
To begin this Field Test Shooting Review of the KWA LM4 RIS PTR GBB Airsoft Rifle I first place 5 shots through my Chronograph using .20 gram plastic Airsoft BB’s and a full mag filled with propane gas. The rounds varied anywhere from around 330-360 fps but averaged a nice 345 fps which is perfect for most Airsoft games.
Next I placed a fresh paper target 30 feet away in my Indoor Sea Can Airgun Range. I then proceeded to shoot 10 shots in semi auto to see how accurate the KWA LM4 RIS PTR GBB Airsoft Rifle would perform for me. I am not a big fan of the aperture or peep sights found on most AR rifles, sure they work well for quick target acquisition but in terms of accuracy at least for me I find them hard to look through. Even so I was able to get about a 4 inch grouping with the KWA LM4 RIS PTR GBB Airsoft Rifle. I am pretty sure I could tighten this up with some more practice using these types of sights so user influence was involved here.
Of course I also had to place the KWA LM4 RIS PTR GBB Airsoft Rifle in Full Auto mode and do first a mag dump of the remaining 25 rounds and then I switched up the magazine for a fresh 40 rounder and did some shorter bursts again followed by a mag dump. The KWA LM4 RIS PTR GBB Airsoft Rifle performed flawlessly even in this somewhat cooler environment (17 degrees Celsius - 62 degrees Fahrenheit).
the KWA LM4 RIS PTR and LM4 KR7 Full Metal GBB Airsoft Rifles are fantastic performers, it’s hard to find consistent Gas Blowback Full Auto guns that can truly get through an entire mag without some sort of major cool down effecting their performance. In my testing even at the end of a full auto magazine the cycle rate was still high and there was no problem at all getting all 40 rounds out. If you want one of the highest quality and best performing Gas Blowback AR M4 styled Airsoft rifles then look no further!
I don't get many Gas Blowback Airsoft Rifles to review all that often so when I get my hands on them I sure have a great time testing them out and feeling the blowback action tapping me in the shoulder as I shoot in semi or full auto modes. Sure Gas Blowback Airsoft Guns don't perform like their AEG counterparts, especially when you're shooting in full auto. You can expect way less rounds in each magazine and even with less rounds the last 5 or 10 shots when shooting rapid fire are going to be compromised but I really don't care because a well made Gas Blowback Airsoft rifle like the KJWorks M4 CQB Carbine GBB is just so much more fun to shoot than an AEG and way more realistic.
So let's get on with my test results for the KJWorks M4 CQB Carbine GBB Airsoft Rifle... The fps consistency was really decent, super consistent when I spaced out my 5 test shots they averaged 377 fps, not really having any low or high fps shots out of the bunch. I did have a full gassed up mag and was using .20 gram plastic 6mm Airsoft BB's for this part of the field test.
Again shooting in semi auto mode, I placed 10 rounds into my paper target setup downrange 30 feet and as per usual I was using a rested shooting setup sitting on a stool and resting the KJWorks M4 CQB Carbine GBB Airsoft Rifle on a sandbag up front. 9 out of the 10 rounds all grouped in about a 3/4 inch group with only 1 round coming outside a bit stretching the 10 shot grouping out to about 1.5 inches. Still really great for a Gas Blowback or any Airsoft rifle for that matter!
Next I shot the rest of the mag in full auto burst mode which was about 20 rounds left in the KJWorks M4 CQB Carbine GBB Airsoft Rifle at this point. As expected the KJWorks M4 CQB Carbine GBB Airsoft Rifle cooled down pretty quick and the last 5 rounds did fire just fine but there was a noticeable drop in power making the rounds shoot low on the target. Keep in mind I was shooting in a not too warm environment, about 15 degrees which is not bad but also not that warm.
I would have liked to have seen the KJWorks M4 CQB Carbine GBB Airsoft Rifle perform as consistently in full auto mode as it did in semi auto but that would have been asking a bit too much from a Gas Blowback Airsoft rifle. The KJWorks M4 CQB Carbine GBB Airsoft Rifle is a really well put together Airsoft Rifle that didn't let me down in the end.
