20-rounders, “hand-finds-hand” reloading is very quick. Like the original 9mm model, the 5.7 carbine uses a simple blowback action. The bolt head fits with the bolt weight like jigsaw pieces. The charging handle located underneath the stock tube reciprocates on firing. It may be locked to the rear using slots on the left and the right of the tube. The polymer trigger is about the same, with an undistinguished 5-pound pull, but is surprisingly conducive to accurate shooting. Without looking at the magazine well, it’s hard to tell the 5.7mm model from the 9mm, but that changes fast once at the range. The effort required to charge the carbine is much lower with the 5.7, which is quite helpful. The standard charging handle is small and makes for a bit of an effort to pull with 9mm – much easier with 5.7mm. Felt recoil is likewise perceptibly reduced, subjectively by half. Due to the strong recoil spring combined with a fairly light bolt, the 9mm version has a noticeable, sharp recoil for the caliber, while the 5.7 is instantly comfortable. The straight-line stock configuration means negligible muzzle rise. The muzzle is threaded 1/2x28, so either a 5.7-rated .22 suppressor or a bigger 5.56 can would work to reduce muzzle blast and flash. With the 5.7mm cartridge using a quarter of the power used in 5.56mm, muzzle flash is minimal even with a bare muzzle, non - existent with a good flash hider. The iconic P90 is nearly 20” overall, while non-NFA PS90 is over 26”, so the Sub2000 is definitely easier to
carry stowed. The most similar rifle from Ruger, LC5.7 is closer to 29”, while an AR57 is even longer at 30”. This makes the Sub2000 the winner of a compactness contest among the full-length 5.7 arms. The next best alternative is also a KelTec product, the R50 rifle which sports a 16” barrel and overall length of 20” with the stock folded. The R50 uses P90 magazines, in case you want higher capacity than the 20 or 30 provided by the box maga- zines of the Sub2000. The proof of utility is in the shooting. A Sub2000 in 9mm produces the 4MOA typical of the caliber fired with ball and 3MOA with lightweight JHP loads, while in 5.7 groups start at 3MOA with American Eagle ball. While smaller groups are probably possible with a magnifying scope, I was more curious about practical results with a red dot likely mounted on a defensive carbine. High ini- tial velocity of 2050fps, about 150fps faster than from 10” P90 barrel, gives the 40-grain FMJ zeroed at 30/150 yards a fairly flat trajectory: 2.5” apex at 90 yards, 2.5” drop at 170 yards, with the bullet going subsonic at 225. A 9mm 115-grain bullet manages a similarly flat trajectory only out to 115 yards, going subsonic by 55. While the limited ballistic coefficient of the 5.7 bullet limits its utility at greater distances, low recoil, good accuracy, and reasonable terminal performance make it a viable contender for typical defensive encounters. In my opinion, this caliber favors heavier non-expanding bullets and controlled expansion HP loads. Some of the 77 Blue Press
WARNING: The products offered for sale in this catalog can expose you to chemicals, including Lead, which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov . ^ !
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