Raws li ArmyTimes, thaum lub Tsib Hlis 2011, Tsoom Fwv Teb Chaws Asmeskas Tub Rog yuav tshaj tawm txoj kev sib tw rau kev tsim kho thiab muab cov phom tshiab. Yav tom ntej, lawv yuav siv los ntawm cov tub rog nrog rau kev txhim kho M4A1. Qhov kev sib tw no yuav tsum ua tiav rau peb xyoos. Raws li cov txiaj ntsig ntawm kev sib tw, daim ntawv cog lus muaj nqis txog $ 30 lab yuav tsum tau kos npe nrog tus yeej rau kev tsim khoom thiab muab cov tshuab.
Nws cia siab tias tom qab kev tshaj tawm txoj kev sib tw, txhua tus neeg koom yuav tau xa lawv cov lus pom zoo ua ntej ob lub hlis. Tom ntej no, Tsoomfwv Meskas Cov Tub Rog yuav sim phom tshiab no hauv 12-18 lub hlis. Thaum tua, nws tau npaj yuav siv ntau dua ob lab daim cartridges. Kev sim tua los ntawm txhua qhov kev thov phom phom yuav raug nqa mus txog thaum nws tau hnav tag. Ua ntej tshaj plaws, cov tub rog yuav tshuaj xyuas qhov riam phom lub peev xwm tua tau kom raug raws li nws hnav.
Tsoomfwv Meskas Cov Tub Rog tsis npaj yuav qhia tawm ib qho kev txwv ntawm qhov muaj peev xwm ntawm riam phom. Qhov pom qhov siab tshaj plaws ntawm qhov tua no yuav tsum tsis pub tsawg dua 500 meters. Nws tau tso cai siv kev siv lub tshuab ua haujlwm, uas ua haujlwm ntawm lub hauv paus ntsiab lus ntawm kev tshem tawm cov hmoov av ua rau ntawm cov roj piston lossis ntawm cov ntsia liaj qhov rooj. Tsis muaj qhov xav tau rau cov khoom sib hloov pauv tau ntawm ntau yam calibers thiab ntau thiab tsawg.
Ntxiv rau qhov kev sib tw rau kev muab phom ntev, Asmeskas Cov Tub Rog npaj yuav ua theem thib ob ntawm kev hloov kho tshiab ntawm rab phom M4. Nyob rau thawj theem ntawm kev hloov kho tshiab, riam phom tau nqa mus rau M4A1 version, uas tau txais lub zog hnyav dua, puv hluav taws tsis siv neeg (M4 muaj lub peev xwm tua hluav taws hauv peb lossis ib leeg) nrog tus nqi siab dua.
Cov theem tom ntej ntawm kev hloov kho tshiab ntawm M4A1 yuav pib sai thiab suav nrog txhim kho kev ua haujlwm tau zoo thiab raug ntawm hluav taws. Theem peb yuav pib hauv 18 lub hlis. Lub tshuab no yuav tau txais kev txhim kho kev tiv thaiv tiv thaiv kev nkag los ntawm cov av thiab txhim kho kev khiav tawm cov pa.
